{
    "1": {
        "name": "Hydrogen",
        "appearance": "colorless",
        "atomic_mass": 1.008,
        "bp": 20.271,
        "category": "diatomic nonmetal",
        "color": "colorless",
        "density": 0.08988,
        "mp": 13.99,
        "molar_heat": 28.836,
        "atomic_number": 1,
        "period": 1,
        "phase": "gas",
        "symbol": "H",
        "shells": [
            1
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        "electron_configuration": "1s1",
        "electron_configuration_semantic": "1s1",
        "electron_affinity": 72.769,
        "electronegativity_pauling": 2.2,
        "ionization_energies": [
            1312
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        "cpk-hex": "ffffff",
        "group": 1
    },
    "2": {
        "name": "Helium",
        "appearance": "colorless gas, exhibiting a red-orange glow when placed in a high-voltage electric field",
        "atomic_mass": 4.0026022,
        "bp": 4.222,
        "category": "noble gas",
        "color": null,
        "density": 0.1786,
        "mp": 0.95,
        "molar_heat": null,
        "atomic_number": 2,
        "period": 1,
        "phase": "gas",
        "symbol": "He",
        "shells": [
            2
        ],
        "electron_configuration": "1s2",
        "electron_configuration_semantic": "1s2",
        "electron_affinity": -48,
        "electronegativity_pauling": null,
        "ionization_energies": [
            2372.3,
            5250.5
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        "cpk-hex": "d9ffff",
        "group": 18
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    "3": {
        "name": "Lithium",
        "appearance": "silvery-white",
        "atomic_mass": 6.94,
        "bp": 1603,
        "category": "alkali metal",
        "color": null,
        "density": 0.534,
        "mp": 453.65,
        "molar_heat": 24.86,
        "atomic_number": 3,
        "period": 2,
        "phase": "solid",
        "symbol": "Li",
        "shells": [
            2,
            1
        ],
        "electron_configuration": "1s2 2s1",
        "electron_configuration_semantic": "[He] 2s1",
        "electron_affinity": 59.6326,
        "electronegativity_pauling": 0.98,
        "ionization_energies": [
            520.2,
            7298.1,
            11815
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        "cpk-hex": "cc80ff",
        "group": 1
    },
    "4": {
        "name": "Beryllium",
        "appearance": "white-gray metallic",
        "atomic_mass": 9.01218315,
        "bp": 2742,
        "category": "alkaline earth metal",
        "color": null,
        "density": 1.85,
        "mp": 1560,
        "molar_heat": 16.443,
        "atomic_number": 4,
        "period": 2,
        "phase": "solid",
        "symbol": "Be",
        "shells": [
            2,
            2
        ],
        "electron_configuration": "1s2 2s2",
        "electron_configuration_semantic": "[He] 2s2",
        "electron_affinity": -48,
        "electronegativity_pauling": 1.57,
        "ionization_energies": [
            899.5,
            1757.1,
            14848.7,
            21006.6
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        "cpk-hex": "c2ff00",
        "group": 2
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    "5": {
        "name": "Boron",
        "appearance": "black-brown",
        "atomic_mass": 10.81,
        "bp": 4200,
        "category": "metalloid",
        "color": null,
        "density": 2.08,
        "mp": 2349,
        "molar_heat": 11.087,
        "atomic_number": 5,
        "period": 2,
        "phase": "solid",
        "symbol": "B",
        "shells": [
            2,
            3
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        "electron_configuration": "1s2 2s2 2p1",
        "electron_configuration_semantic": "[He] 2s2 2p1",
        "electron_affinity": 26.989,
        "electronegativity_pauling": 2.04,
        "ionization_energies": [
            800.6,
            2427.1,
            3659.7,
            25025.8,
            32826.7
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        "cpk-hex": "ffb5b5",
        "group": 13
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    "6": {
        "name": "Carbon",
        "appearance": null,
        "atomic_mass": 12.011,
        "bp": null,
        "category": "polyatomic nonmetal",
        "color": null,
        "density": 1.821,
        "mp": null,
        "molar_heat": 8.517,
        "atomic_number": 6,
        "period": 2,
        "phase": "solid",
        "symbol": "C",
        "shells": [
            2,
            4
        ],
        "electron_configuration": "1s2 2s2 2p2",
        "electron_configuration_semantic": "[He] 2s2 2p2",
        "electron_affinity": 121.7763,
        "electronegativity_pauling": 2.55,
        "ionization_energies": [
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            2352.6,
            4620.5,
            6222.7,
            37831,
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        "cpk-hex": "909090",
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    "7": {
        "name": "Nitrogen",
        "appearance": "colorless gas, liquid or solid",
        "atomic_mass": 14.007,
        "bp": 77.355,
        "category": "diatomic nonmetal",
        "color": null,
        "density": 1.251,
        "mp": 63.15,
        "molar_heat": null,
        "atomic_number": 7,
        "period": 2,
        "phase": "gas",
        "symbol": "N",
        "shells": [
            2,
            5
        ],
        "electron_configuration": "1s2 2s2 2p3",
        "electron_configuration_semantic": "[He] 2s2 2p3",
        "electron_affinity": -6.8,
        "electronegativity_pauling": 3.04,
        "ionization_energies": [
            1402.3,
            2856,
            4578.1,
            7475,
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            53266.6,
            64360
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        "cpk-hex": "3050f8",
        "group": 15
    },
    "8": {
        "name": "Oxygen",
        "appearance": null,
        "atomic_mass": 15.999,
        "bp": 90.188,
        "category": "diatomic nonmetal",
        "color": null,
        "density": 1.429,
        "mp": 54.36,
        "molar_heat": null,
        "atomic_number": 8,
        "period": 2,
        "phase": "gas",
        "symbol": "O",
        "shells": [
            2,
            6
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        "electron_configuration": "1s2 2s2 2p4",
        "electron_configuration_semantic": "[He] 2s2 2p4",
        "electron_affinity": 140.976,
        "electronegativity_pauling": 3.44,
        "ionization_energies": [
            1313.9,
            3388.3,
            5300.5,
            7469.2,
            10989.5,
            13326.5,
            71330,
            84078
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        "cpk-hex": "ff0d0d",
        "group": 16
    },
    "9": {
        "name": "Fluorine",
        "appearance": null,
        "atomic_mass": 18.9984031636,
        "bp": 85.03,
        "category": "diatomic nonmetal",
        "color": null,
        "density": 1.696,
        "mp": 53.48,
        "molar_heat": null,
        "atomic_number": 9,
        "period": 2,
        "phase": "gas",
        "symbol": "F",
        "shells": [
            2,
            7
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        "electron_configuration": "1s2 2s2 2p5",
        "electron_configuration_semantic": "[He] 2s2 2p5",
        "electron_affinity": 328.1649,
        "electronegativity_pauling": 3.98,
        "ionization_energies": [
            1681,
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            6050.4,
            8407.7,
            11022.7,
            15164.1,
            17868,
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            106434.3
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        "cpk-hex": "90e050",
        "group": 17
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    "10": {
        "name": "Neon",
        "appearance": "colorless gas exhibiting an orange-red glow when placed in a high voltage electric field",
        "atomic_mass": 20.17976,
        "bp": 27.104,
        "category": "noble gas",
        "color": null,
        "density": 0.9002,
        "mp": 24.56,
        "molar_heat": null,
        "atomic_number": 10,
        "period": 2,
        "phase": "gas",
        "symbol": "Ne",
        "shells": [
            2,
            8
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        "electron_configuration": "1s2 2s2 2p6",
        "electron_configuration_semantic": "[He] 2s2 2p6",
        "electron_affinity": -116,
        "electronegativity_pauling": null,
        "ionization_energies": [
            2080.7,
            3952.3,
            6122,
            9371,
            12177,
            15238,
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            23069.5,
            115379.5,
            131432
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        "cpk-hex": "b3e3f5",
        "group": 18
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    "11": {
        "name": "Sodium",
        "appearance": "silvery white metallic",
        "atomic_mass": 22.989769282,
        "bp": 1156.09,
        "category": "alkali metal",
        "color": null,
        "density": 0.968,
        "mp": 370.944,
        "molar_heat": 28.23,
        "atomic_number": 11,
        "period": 3,
        "phase": "solid",
        "symbol": "Na",
        "shells": [
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            8,
            1
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        "electron_configuration": "1s2 2s2 2p6 3s1",
        "electron_configuration_semantic": "[Ne] 3s1",
        "electron_affinity": 52.867,
        "electronegativity_pauling": 0.93,
        "ionization_energies": [
            495.8,
            4562,
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        "cpk-hex": "ab5cf2",
        "group": 1
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    "12": {
        "name": "Magnesium",
        "appearance": "shiny grey solid",
        "atomic_mass": 24.305,
        "bp": 1363,
        "category": "alkaline earth metal",
        "color": null,
        "density": 1.738,
        "mp": 923,
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        "period": 3,
        "phase": "solid",
        "symbol": "Mg",
        "shells": [
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            8,
            2
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        "electron_configuration": "1s2 2s2 2p6 3s2",
        "electron_configuration_semantic": "[Ne] 3s2",
        "electron_affinity": -40,
        "electronegativity_pauling": 1.31,
        "ionization_energies": [
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            7732.7,
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        "cpk-hex": "8aff00",
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    "13": {
        "name": "Aluminium",
        "appearance": "silvery gray metallic",
        "atomic_mass": 26.98153857,
        "bp": 2743,
        "category": "post_processing-transition metal",
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        "density": 2.7,
        "mp": 933.47,
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        "period": 3,
        "phase": "solid",
        "symbol": "Al",
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            8,
            3
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        "electron_configuration": "1s2 2s2 2p6 3s2 3p1",
        "electron_configuration_semantic": "[Ne] 3s2 3p1",
        "electron_affinity": 41.762,
        "electronegativity_pauling": 1.61,
        "ionization_energies": [
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        "group": 13
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    "14": {
        "name": "Silicon",
        "appearance": "crystalline, reflective with bluish-tinged faces",
        "atomic_mass": 28.085,
        "bp": 3538,
        "category": "metalloid",
        "color": null,
        "density": 2.329,
        "mp": 1687,
        "molar_heat": 19.789,
        "atomic_number": 14,
        "period": 3,
        "phase": "solid",
        "symbol": "Si",
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            8,
            4
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        "electron_configuration": "1s2 2s2 2p6 3s2 3p2",
        "electron_configuration_semantic": "[Ne] 3s2 3p2",
        "electron_affinity": 134.0684,
        "electronegativity_pauling": 1.9,
        "ionization_energies": [
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        "cpk-hex": "f0c8a0",
        "group": 14
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    "15": {
        "name": "Phosphorus",
        "appearance": "colourless, waxy white, yellow, scarlet, red, violet, black",
        "atomic_mass": 30.9737619985,
        "bp": null,
        "category": "polyatomic nonmetal",
        "color": null,
        "density": 1.823,
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        "molar_heat": 23.824,
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        "period": 3,
        "phase": "solid",
        "symbol": "P",
        "shells": [
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            8,
            5
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        "electron_configuration": "1s2 2s2 2p6 3s2 3p3",
        "electron_configuration_semantic": "[Ne] 3s2 3p3",
        "electron_affinity": 72.037,
        "electronegativity_pauling": 2.19,
        "ionization_energies": [
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        "cpk-hex": "ff8000",
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    "16": {
        "name": "Sulfur",
        "appearance": "lemon yellow sintered microcrystals",
        "atomic_mass": 32.06,
        "bp": 717.8,
        "category": "polyatomic nonmetal",
        "color": null,
        "density": 2.07,
        "mp": 388.36,
        "molar_heat": 22.75,
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        "period": 3,
        "phase": "solid",
        "symbol": "S",
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            8,
            6
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        "electron_configuration": "1s2 2s2 2p6 3s2 3p4",
        "electron_configuration_semantic": "[Ne] 3s2 3p4",
        "electron_affinity": 200.4101,
        "electronegativity_pauling": 2.58,
        "ionization_energies": [
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        "cpk-hex": "ffff30",
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    "17": {
        "name": "Chlorine",
        "appearance": "pale yellow-green gas",
        "atomic_mass": 35.45,
        "bp": 239.11,
        "category": "diatomic nonmetal",
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        "density": 3.2,
        "mp": 171.6,
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        "period": 3,
        "phase": "gas",
        "symbol": "Cl",
        "shells": [
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        "electron_configuration": "1s2 2s2 2p6 3s2 3p5",
        "electron_configuration_semantic": "[Ne] 3s2 3p5",
        "electron_affinity": 348.575,
        "electronegativity_pauling": 3.16,
        "ionization_energies": [
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    "18": {
        "name": "Argon",
        "appearance": "colorless gas exhibiting a lilac/violet glow when placed in a high voltage electric field",
        "atomic_mass": 39.9481,
        "bp": 87.302,
        "category": "noble gas",
        "color": null,
        "density": 1.784,
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        "period": 3,
        "phase": "gas",
        "symbol": "Ar",
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            8
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        "electron_configuration": "1s2 2s2 2p6 3s2 3p6",
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        "electron_affinity": -96,
        "electronegativity_pauling": null,
        "ionization_energies": [
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        "cpk-hex": "80d1e3",
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    "19": {
        "name": "Potassium",
        "appearance": "silvery gray",
        "atomic_mass": 39.09831,
        "bp": 1032,
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        "density": 0.862,
        "mp": 336.7,
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        "period": 4,
        "phase": "solid",
        "symbol": "K",
        "shells": [
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        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s1",
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        "electron_affinity": 48.383,
        "electronegativity_pauling": 0.82,
        "ionization_energies": [
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    "20": {
        "name": "Calcium",
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        "atomic_mass": 40.0784,
        "bp": 1757,
        "category": "alkaline earth metal",
        "color": null,
        "density": 1.55,
        "mp": 1115,
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        "atomic_number": 20,
        "period": 4,
        "phase": "solid",
        "symbol": "Ca",
        "shells": [
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        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2",
        "electron_configuration_semantic": "[Ar] 4s2",
        "electron_affinity": 2.37,
        "electronegativity_pauling": 1,
        "ionization_energies": [
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        "cpk-hex": "3dff00",
        "group": 2
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    "21": {
        "name": "Scandium",
        "appearance": "silvery white",
        "atomic_mass": 44.9559085,
        "bp": 3109,
        "category": "transition metal",
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        "density": 2.985,
        "mp": 1814,
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        "period": 4,
        "phase": "solid",
        "symbol": "Sc",
        "shells": [
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        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d1",
        "electron_configuration_semantic": "[Ar] 3d1 4s2",
        "electron_affinity": 18,
        "electronegativity_pauling": 1.36,
        "ionization_energies": [
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        "cpk-hex": "e6e6e6",
        "group": 3
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    "22": {
        "name": "Titanium",
        "appearance": "silvery grey-white metallic",
        "atomic_mass": 47.8671,
        "bp": 3560,
        "category": "transition metal",
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        "density": 4.506,
        "mp": 1941,
        "molar_heat": 25.06,
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        "period": 4,
        "phase": "solid",
        "symbol": "Ti",
        "shells": [
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            10,
            2
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        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d2",
        "electron_configuration_semantic": "[Ar] 3d2 4s2",
        "electron_affinity": 7.289,
        "electronegativity_pauling": 1.54,
        "ionization_energies": [
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        "cpk-hex": "bfc2c7",
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        "name": "Vanadium",
        "appearance": "blue-silver-grey metal",
        "atomic_mass": 50.94151,
        "bp": 3680,
        "category": "transition metal",
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        "density": 6,
        "mp": 2183,
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        "phase": "solid",
        "symbol": "V",
        "shells": [
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        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d3",
        "electron_configuration_semantic": "[Ar] 3d3 4s2",
        "electron_affinity": 50.911,
        "electronegativity_pauling": 1.63,
        "ionization_energies": [
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            151440,
            661050,
            699144
        ],
        "cpk-hex": "a6a6ab",
        "group": 5
    },
    "24": {
        "name": "Chromium",
        "appearance": "silvery metallic",
        "atomic_mass": 51.99616,
        "bp": 2944,
        "category": "transition metal",
        "color": null,
        "density": 7.19,
        "mp": 2180,
        "molar_heat": 23.35,
        "atomic_number": 24,
        "period": 4,
        "phase": "solid",
        "symbol": "Cr",
        "shells": [
            2,
            8,
            13,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s1 3d5",
        "electron_configuration_semantic": "[Ar] 3d5 4s1",
        "electron_affinity": 65.21,
        "electronegativity_pauling": 1.66,
        "ionization_energies": [
            652.9,
            1590.6,
            2987,
            4743,
            6702,
            8744.9,
            15455,
            17820,
            20190,
            23580,
            26130,
            28750,
            34230,
            37066,
            97510,
            105800,
            114300,
            125300,
            134700,
            144300,
            157700,
            166090,
            721870,
            761733
        ],
        "cpk-hex": "8a99c7",
        "group": 6
    },
    "25": {
        "name": "Manganese",
        "appearance": "silvery metallic",
        "atomic_mass": 54.9380443,
        "bp": 2334,
        "category": "transition metal",
        "color": null,
        "density": 7.21,
        "mp": 1519,
        "molar_heat": 26.32,
        "atomic_number": 25,
        "period": 4,
        "phase": "solid",
        "symbol": "Mn",
        "shells": [
            2,
            8,
            13,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d5",
        "electron_configuration_semantic": "[Ar] 3d5 4s2",
        "electron_affinity": -50,
        "electronegativity_pauling": 1.55,
        "ionization_energies": [
            717.3,
            1509,
            3248,
            4940,
            6990,
            9220,
            11500,
            18770,
            21400,
            23960,
            27590,
            30330,
            33150,
            38880,
            41987,
            109480,
            118100,
            127100,
            138600,
            148500,
            158600,
            172500,
            181380,
            785450,
            827067
        ],
        "cpk-hex": "9c7ac7",
        "group": 7
    },
    "26": {
        "name": "Iron",
        "appearance": "lustrous metallic with a grayish tinge",
        "atomic_mass": 55.8452,
        "bp": 3134,
        "category": "transition metal",
        "color": null,
        "density": 7.874,
        "mp": 1811,
        "molar_heat": 25.1,
        "atomic_number": 26,
        "period": 4,
        "phase": "solid",
        "symbol": "Fe",
        "shells": [
            2,
            8,
            14,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d6",
        "electron_configuration_semantic": "[Ar] 3d6 4s2",
        "electron_affinity": 14.785,
        "electronegativity_pauling": 1.83,
        "ionization_energies": [
            762.5,
            1561.9,
            2957,
            5290,
            7240,
            9560,
            12060,
            14580,
            22540,
            25290,
            28000,
            31920,
            34830,
            37840,
            44100,
            47206,
            122200,
            131000,
            140500,
            152600,
            163000,
            173600,
            188100,
            195200,
            851800,
            895161
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        "cpk-hex": "e06633",
        "group": 8
    },
    "27": {
        "name": "Cobalt",
        "appearance": "hard lustrous gray metal",
        "atomic_mass": 58.9331944,
        "bp": 3200,
        "category": "transition metal",
        "color": "metallic gray",
        "density": 8.9,
        "mp": 1768,
        "molar_heat": 24.81,
        "atomic_number": 27,
        "period": 4,
        "phase": "solid",
        "symbol": "Co",
        "shells": [
            2,
            8,
            15,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d7",
        "electron_configuration_semantic": "[Ar] 3d7 4s2",
        "electron_affinity": 63.898,
        "electronegativity_pauling": 1.88,
        "ionization_energies": [
            760.4,
            1648,
            3232,
            4950,
            7670,
            9840,
            12440,
            15230,
            17959,
            26570,
            29400,
            32400,
            36600,
            39700,
            42800,
            49396,
            52737,
            134810,
            145170,
            154700,
            167400,
            178100,
            189300,
            204500,
            214100,
            920870,
            966023
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        "cpk-hex": "f090a0",
        "group": 9
    },
    "28": {
        "name": "Nickel",
        "appearance": "lustrous, metallic, and silver with a gold tinge",
        "atomic_mass": 58.69344,
        "bp": 3003,
        "category": "transition metal",
        "color": null,
        "density": 8.908,
        "mp": 1728,
        "molar_heat": 26.07,
        "atomic_number": 28,
        "period": 4,
        "phase": "solid",
        "symbol": "Ni",
        "shells": [
            2,
            8,
            16,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d8",
        "electron_configuration_semantic": "[Ar] 3d8 4s2",
        "electron_affinity": 111.65,
        "electronegativity_pauling": 1.91,
        "ionization_energies": [
            737.1,
            1753,
            3395,
            5300,
            7339,
            10400,
            12800,
            15600,
            18600,
            21670,
            30970,
            34000,
            37100,
            41500,
            44800,
            48100,
            55101,
            58570,
            148700,
            159000,
            169400,
            182700,
            194000,
            205600,
            221400,
            231490,
            992718,
            1039668
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        "cpk-hex": "50d050",
        "group": 10
    },
    "29": {
        "name": "Copper",
        "appearance": "red-orange metallic luster",
        "atomic_mass": 63.5463,
        "bp": 2835,
        "category": "transition metal",
        "color": null,
        "density": 8.96,
        "mp": 1357.77,
        "molar_heat": 24.44,
        "atomic_number": 29,
        "period": 4,
        "phase": "solid",
        "symbol": "Cu",
        "shells": [
            2,
            8,
            18,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s1 3d10",
        "electron_configuration_semantic": "[Ar] 3d10 4s1",
        "electron_affinity": 119.235,
        "electronegativity_pauling": 1.9,
        "ionization_energies": [
            745.5,
            1957.9,
            3555,
            5536,
            7700,
            9900,
            13400,
            16000,
            19200,
            22400,
            25600,
            35600,
            38700,
            42000,
            46700,
            50200,
            53700,
            61100,
            64702,
            163700,
            174100,
            184900,
            198800,
            210500,
            222700,
            239100,
            249660,
            1067358,
            1116105
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        "cpk-hex": "c88033",
        "group": 11
    },
    "30": {
        "name": "Zinc",
        "appearance": "silver-gray",
        "atomic_mass": 65.382,
        "bp": 1180,
        "category": "transition metal",
        "color": null,
        "density": 7.14,
        "mp": 692.68,
        "molar_heat": 25.47,
        "atomic_number": 30,
        "period": 4,
        "phase": "solid",
        "symbol": "Zn",
        "shells": [
            2,
            8,
            18,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10",
        "electron_configuration_semantic": "[Ar] 3d10 4s2",
        "electron_affinity": -58,
        "electronegativity_pauling": 1.65,
        "ionization_energies": [
            906.4,
            1733.3,
            3833,
            5731,
            7970,
            10400,
            12900,
            16800,
            19600,
            23000,
            26400,
            29990,
            40490,
            43800,
            47300,
            52300,
            55900,
            59700,
            67300,
            71200,
            179100
        ],
        "cpk-hex": "7d80b0",
        "group": 12
    },
    "31": {
        "name": "Gallium",
        "appearance": "silver-white",
        "atomic_mass": 69.7231,
        "bp": 2673,
        "category": "post_processing-transition metal",
        "color": null,
        "density": 5.91,
        "mp": 302.9146,
        "molar_heat": 25.86,
        "atomic_number": 31,
        "period": 4,
        "phase": "solid",
        "symbol": "Ga",
        "shells": [
            2,
            8,
            18,
            3
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1",
        "electron_configuration_semantic": "[Ar] 3d10 4s2 4p1",
        "electron_affinity": 41,
        "electronegativity_pauling": 1.81,
        "ionization_energies": [
            578.8,
            1979.3,
            2963,
            6180
        ],
        "cpk-hex": "c28f8f",
        "group": 13
    },
    "32": {
        "name": "Germanium",
        "appearance": "grayish-white",
        "atomic_mass": 72.6308,
        "bp": 3106,
        "category": "metalloid",
        "color": null,
        "density": 5.323,
        "mp": 1211.4,
        "molar_heat": 23.222,
        "atomic_number": 32,
        "period": 4,
        "phase": "solid",
        "symbol": "Ge",
        "shells": [
            2,
            8,
            18,
            4
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p2",
        "electron_configuration_semantic": "[Ar] 3d10 4s2 4p2",
        "electron_affinity": 118.9352,
        "electronegativity_pauling": 2.01,
        "ionization_energies": [
            762,
            1537.5,
            3302.1,
            4411,
            9020
        ],
        "cpk-hex": "668f8f",
        "group": 14
    },
    "33": {
        "name": "Arsenic",
        "appearance": "metallic grey",
        "atomic_mass": 74.9215956,
        "bp": null,
        "category": "metalloid",
        "color": null,
        "density": 5.727,
        "mp": null,
        "molar_heat": 24.64,
        "atomic_number": 33,
        "period": 4,
        "phase": "solid",
        "symbol": "As",
        "shells": [
            2,
            8,
            18,
            5
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3",
        "electron_configuration_semantic": "[Ar] 3d10 4s2 4p3",
        "electron_affinity": 77.65,
        "electronegativity_pauling": 2.18,
        "ionization_energies": [
            947,
            1798,
            2735,
            4837,
            6043,
            12310
        ],
        "cpk-hex": "bd80e3",
        "group": 15
    },
    "34": {
        "name": "Selenium",
        "appearance": "black, red, and gray (not pictured) allotropes",
        "atomic_mass": 78.9718,
        "bp": 958,
        "category": "polyatomic nonmetal",
        "color": null,
        "density": 4.81,
        "mp": 494,
        "molar_heat": 25.363,
        "atomic_number": 34,
        "period": 4,
        "phase": "solid",
        "symbol": "Se",
        "shells": [
            2,
            8,
            18,
            6
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4",
        "electron_configuration_semantic": "[Ar] 3d10 4s2 4p4",
        "electron_affinity": 194.9587,
        "electronegativity_pauling": 2.55,
        "ionization_energies": [
            941,
            2045,
            2973.7,
            4144,
            6590,
            7880,
            14990
        ],
        "cpk-hex": "ffa100",
        "group": 16
    },
    "35": {
        "name": "Bromine",
        "appearance": null,
        "atomic_mass": 79.904,
        "bp": 332,
        "category": "diatomic nonmetal",
        "color": null,
        "density": 3.1028,
        "mp": 265.8,
        "molar_heat": null,
        "atomic_number": 35,
        "period": 4,
        "phase": "liquid",
        "symbol": "Br",
        "shells": [
            2,
            8,
            18,
            7
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5",
        "electron_configuration_semantic": "[Ar] 3d10 4s2 4p5",
        "electron_affinity": 324.537,
        "electronegativity_pauling": 2.96,
        "ionization_energies": [
            1139.9,
            2103,
            3470,
            4560,
            5760,
            8550,
            9940,
            18600
        ],
        "cpk-hex": "a62929",
        "group": 17
    },
    "36": {
        "name": "Krypton",
        "appearance": "colorless gas, exhibiting a whitish glow in a high electric field",
        "atomic_mass": 83.7982,
        "bp": 119.93,
        "category": "noble gas",
        "color": null,
        "density": 3.749,
        "mp": 115.78,
        "molar_heat": null,
        "atomic_number": 36,
        "period": 4,
        "phase": "gas",
        "symbol": "Kr",
        "shells": [
            2,
            8,
            18,
            8
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6",
        "electron_configuration_semantic": "[Ar] 3d10 4s2 4p6",
        "electron_affinity": -96,
        "electronegativity_pauling": 3,
        "ionization_energies": [
            1350.8,
            2350.4,
            3565,
            5070,
            6240,
            7570,
            10710,
            12138,
            22274,
            25880,
            29700,
            33800,
            37700,
            43100,
            47500,
            52200,
            57100,
            61800,
            75800,
            80400,
            85300,
            90400,
            96300,
            101400,
            111100,
            116290,
            282500,
            296200,
            311400,
            326200
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        "cpk-hex": "5cb8d1",
        "group": 18
    },
    "37": {
        "name": "Rubidium",
        "appearance": "grey white",
        "atomic_mass": 85.46783,
        "bp": 961,
        "category": "alkali metal",
        "color": null,
        "density": 1.532,
        "mp": 312.45,
        "molar_heat": 31.06,
        "atomic_number": 37,
        "period": 5,
        "phase": "solid",
        "symbol": "Rb",
        "shells": [
            2,
            8,
            18,
            8,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1",
        "electron_configuration_semantic": "[Kr] 5s1",
        "electron_affinity": 46.884,
        "electronegativity_pauling": 0.82,
        "ionization_energies": [
            403,
            2633,
            3860,
            5080,
            6850,
            8140,
            9570,
            13120,
            14500,
            26740
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        "cpk-hex": "702eb0",
        "group": 1
    },
    "38": {
        "name": "Strontium",
        "appearance": null,
        "atomic_mass": 87.621,
        "bp": 1650,
        "category": "alkaline earth metal",
        "color": null,
        "density": 2.64,
        "mp": 1050,
        "molar_heat": 26.4,
        "atomic_number": 38,
        "period": 5,
        "phase": "solid",
        "symbol": "Sr",
        "shells": [
            2,
            8,
            18,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2",
        "electron_configuration_semantic": "[Kr] 5s2",
        "electron_affinity": 5.023,
        "electronegativity_pauling": 0.95,
        "ionization_energies": [
            549.5,
            1064.2,
            4138,
            5500,
            6910,
            8760,
            10230,
            11800,
            15600,
            17100,
            31270
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        "cpk-hex": "00ff00",
        "group": 2
    },
    "39": {
        "name": "Yttrium",
        "appearance": "silvery white",
        "atomic_mass": 88.905842,
        "bp": 3203,
        "category": "transition metal",
        "color": null,
        "density": 4.472,
        "mp": 1799,
        "molar_heat": 26.53,
        "atomic_number": 39,
        "period": 5,
        "phase": "solid",
        "symbol": "Y",
        "shells": [
            2,
            8,
            18,
            9,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d1",
        "electron_configuration_semantic": "[Kr] 4d1 5s2",
        "electron_affinity": 29.6,
        "electronegativity_pauling": 1.22,
        "ionization_energies": [
            600,
            1180,
            1980,
            5847,
            7430,
            8970,
            11190,
            12450,
            14110,
            18400,
            19900,
            36090
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        "cpk-hex": "94ffff",
        "group": 3
    },
    "40": {
        "name": "Zirconium",
        "appearance": "silvery white",
        "atomic_mass": 91.2242,
        "bp": 4650,
        "category": "transition metal",
        "color": null,
        "density": 6.52,
        "mp": 2128,
        "molar_heat": 25.36,
        "atomic_number": 40,
        "period": 5,
        "phase": "solid",
        "symbol": "Zr",
        "shells": [
            2,
            8,
            18,
            10,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d2",
        "electron_configuration_semantic": "[Kr] 4d2 5s2",
        "electron_affinity": 41.806,
        "electronegativity_pauling": 1.33,
        "ionization_energies": [
            640.1,
            1270,
            2218,
            3313,
            7752,
            9500
        ],
        "cpk-hex": "94e0e0",
        "group": 4
    },
    "41": {
        "name": "Niobium",
        "appearance": "gray metallic, bluish when oxidized",
        "atomic_mass": 92.906372,
        "bp": 5017,
        "category": "transition metal",
        "color": null,
        "density": 8.57,
        "mp": 2750,
        "molar_heat": 24.6,
        "atomic_number": 41,
        "period": 5,
        "phase": "solid",
        "symbol": "Nb",
        "shells": [
            2,
            8,
            18,
            12,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d4",
        "electron_configuration_semantic": "[Kr] 4d4 5s1",
        "electron_affinity": 88.516,
        "electronegativity_pauling": 1.6,
        "ionization_energies": [
            652.1,
            1380,
            2416,
            3700,
            4877,
            9847,
            12100
        ],
        "cpk-hex": "73c2c9",
        "group": 5
    },
    "42": {
        "name": "Molybdenum",
        "appearance": "gray metallic",
        "atomic_mass": 95.951,
        "bp": 4912,
        "category": "transition metal",
        "color": null,
        "density": 10.28,
        "mp": 2896,
        "molar_heat": 24.06,
        "atomic_number": 42,
        "period": 5,
        "phase": "solid",
        "symbol": "Mo",
        "shells": [
            2,
            8,
            18,
            13,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d5",
        "electron_configuration_semantic": "[Kr] 4d5 5s1",
        "electron_affinity": 72.1,
        "electronegativity_pauling": 2.16,
        "ionization_energies": [
            684.3,
            1560,
            2618,
            4480,
            5257,
            6640.8,
            12125,
            13860,
            15835,
            17980,
            20190,
            22219,
            26930,
            29196,
            52490,
            55000,
            61400,
            67700,
            74000,
            80400,
            87000,
            93400,
            98420,
            104400,
            121900,
            127700,
            133800,
            139800,
            148100,
            154500
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        "cpk-hex": "54b5b5",
        "group": 6
    },
    "43": {
        "name": "Technetium",
        "appearance": "shiny gray metal",
        "atomic_mass": 98,
        "bp": 4538,
        "category": "transition metal",
        "color": null,
        "density": 11,
        "mp": 2430,
        "molar_heat": 24.27,
        "atomic_number": 43,
        "period": 5,
        "phase": "solid",
        "symbol": "Tc",
        "shells": [
            2,
            8,
            18,
            13,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d5",
        "electron_configuration_semantic": "[Kr] 4d5 5s2",
        "electron_affinity": 53,
        "electronegativity_pauling": 1.9,
        "ionization_energies": [
            702,
            1470,
            2850
        ],
        "cpk-hex": "3b9e9e",
        "group": 7
    },
    "44": {
        "name": "Ruthenium",
        "appearance": "silvery white metallic",
        "atomic_mass": 101.072,
        "bp": 4423,
        "category": "transition metal",
        "color": null,
        "density": 12.45,
        "mp": 2607,
        "molar_heat": 24.06,
        "atomic_number": 44,
        "period": 5,
        "phase": "solid",
        "symbol": "Ru",
        "shells": [
            2,
            8,
            18,
            15,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d7",
        "electron_configuration_semantic": "[Kr] 4d7 5s1",
        "electron_affinity": 100.96,
        "electronegativity_pauling": 2.2,
        "ionization_energies": [
            710.2,
            1620,
            2747
        ],
        "cpk-hex": "248f8f",
        "group": 8
    },
    "45": {
        "name": "Rhodium",
        "appearance": "silvery white metallic",
        "atomic_mass": 102.905502,
        "bp": 3968,
        "category": "transition metal",
        "color": null,
        "density": 12.41,
        "mp": 2237,
        "molar_heat": 24.98,
        "atomic_number": 45,
        "period": 5,
        "phase": "solid",
        "symbol": "Rh",
        "shells": [
            2,
            8,
            18,
            16,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d8",
        "electron_configuration_semantic": "[Kr] 4d8 5s1",
        "electron_affinity": 110.27,
        "electronegativity_pauling": 2.28,
        "ionization_energies": [
            719.7,
            1740,
            2997
        ],
        "cpk-hex": "0a7d8c",
        "group": 9
    },
    "46": {
        "name": "Palladium",
        "appearance": "silvery white",
        "atomic_mass": 106.421,
        "bp": 3236,
        "category": "transition metal",
        "color": null,
        "density": 12.023,
        "mp": 1828.05,
        "molar_heat": 25.98,
        "atomic_number": 46,
        "period": 5,
        "phase": "solid",
        "symbol": "Pd",
        "shells": [
            2,
            8,
            18,
            18
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 4d10",
        "electron_configuration_semantic": "[Kr] 4d10",
        "electron_affinity": 54.24,
        "electronegativity_pauling": 2.2,
        "ionization_energies": [
            804.4,
            1870,
            3177
        ],
        "cpk-hex": "006985",
        "group": 10
    },
    "47": {
        "name": "Silver",
        "appearance": "lustrous white metal",
        "atomic_mass": 107.86822,
        "bp": 2435,
        "category": "transition metal",
        "color": null,
        "density": 10.49,
        "mp": 1234.93,
        "molar_heat": 25.35,
        "atomic_number": 47,
        "period": 5,
        "phase": "solid",
        "symbol": "Ag",
        "shells": [
            2,
            8,
            18,
            18,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 4d10",
        "electron_configuration_semantic": "[Kr] 4d10 5s1",
        "electron_affinity": 125.862,
        "electronegativity_pauling": 1.93,
        "ionization_energies": [
            731,
            2070,
            3361
        ],
        "cpk-hex": "c0c0c0",
        "group": 11
    },
    "48": {
        "name": "Cadmium",
        "appearance": "silvery bluish-gray metallic",
        "atomic_mass": 112.4144,
        "bp": 1040,
        "category": "transition metal",
        "color": null,
        "density": 8.65,
        "mp": 594.22,
        "molar_heat": 26.02,
        "atomic_number": 48,
        "period": 5,
        "phase": "solid",
        "symbol": "Cd",
        "shells": [
            2,
            8,
            18,
            18,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10",
        "electron_configuration_semantic": "[Kr] 4d10 5s2",
        "electron_affinity": -68,
        "electronegativity_pauling": 1.69,
        "ionization_energies": [
            867.8,
            1631.4,
            3616
        ],
        "cpk-hex": "ffd98f",
        "group": 12
    },
    "49": {
        "name": "Indium",
        "appearance": "silvery lustrous gray",
        "atomic_mass": 114.8181,
        "bp": 2345,
        "category": "post_processing-transition metal",
        "color": null,
        "density": 7.31,
        "mp": 429.7485,
        "molar_heat": 26.74,
        "atomic_number": 49,
        "period": 5,
        "phase": "solid",
        "symbol": "In",
        "shells": [
            2,
            8,
            18,
            18,
            3
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p1",
        "electron_configuration_semantic": "[Kr] 4d10 5s2 5p1",
        "electron_affinity": 37.043,
        "electronegativity_pauling": 1.78,
        "ionization_energies": [
            558.3,
            1820.7,
            2704,
            5210
        ],
        "cpk-hex": "a67573",
        "group": 13
    },
    "50": {
        "name": "Tin",
        "appearance": "silvery-white (beta, β) or gray (alpha, α)",
        "atomic_mass": 118.7107,
        "bp": 2875,
        "category": "post_processing-transition metal",
        "color": null,
        "density": 7.365,
        "mp": 505.08,
        "molar_heat": 27.112,
        "atomic_number": 50,
        "period": 5,
        "phase": "solid",
        "symbol": "Sn",
        "shells": [
            2,
            8,
            18,
            18,
            4
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p2",
        "electron_configuration_semantic": "[Kr] 4d10 5s2 5p2",
        "electron_affinity": 107.2984,
        "electronegativity_pauling": 1.96,
        "ionization_energies": [
            708.6,
            1411.8,
            2943,
            3930.3,
            7456
        ],
        "cpk-hex": "668080",
        "group": 14
    },
    "51": {
        "name": "Antimony",
        "appearance": "silvery lustrous gray",
        "atomic_mass": 121.7601,
        "bp": 1908,
        "category": "metalloid",
        "color": null,
        "density": 6.697,
        "mp": 903.78,
        "molar_heat": 25.23,
        "atomic_number": 51,
        "period": 5,
        "phase": "solid",
        "symbol": "Sb",
        "shells": [
            2,
            8,
            18,
            18,
            5
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p3",
        "electron_configuration_semantic": "[Kr] 4d10 5s2 5p3",
        "electron_affinity": 101.059,
        "electronegativity_pauling": 2.05,
        "ionization_energies": [
            834,
            1594.9,
            2440,
            4260,
            5400,
            10400
        ],
        "cpk-hex": "9e63b5",
        "group": 15
    },
    "52": {
        "name": "Tellurium",
        "appearance": null,
        "atomic_mass": 127.603,
        "bp": 1261,
        "category": "metalloid",
        "color": null,
        "density": 6.24,
        "mp": 722.66,
        "molar_heat": 25.73,
        "atomic_number": 52,
        "period": 5,
        "phase": "solid",
        "symbol": "Te",
        "shells": [
            2,
            8,
            18,
            18,
            6
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p4",
        "electron_configuration_semantic": "[Kr] 4d10 5s2 5p4",
        "electron_affinity": 190.161,
        "electronegativity_pauling": 2.1,
        "ionization_energies": [
            869.3,
            1790,
            2698,
            3610,
            5668,
            6820,
            13200
        ],
        "cpk-hex": "d47a00",
        "group": 16
    },
    "53": {
        "name": "Iodine",
        "appearance": "lustrous metallic gray, violet as a gas",
        "atomic_mass": 126.904473,
        "bp": 457.4,
        "category": "diatomic nonmetal",
        "color": null,
        "density": 4.933,
        "mp": 386.85,
        "molar_heat": null,
        "atomic_number": 53,
        "period": 5,
        "phase": "solid",
        "symbol": "I",
        "shells": [
            2,
            8,
            18,
            18,
            7
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p5",
        "electron_configuration_semantic": "[Kr] 4d10 5s2 5p5",
        "electron_affinity": 295.1531,
        "electronegativity_pauling": 2.66,
        "ionization_energies": [
            1008.4,
            1845.9,
            3180
        ],
        "cpk-hex": "940094",
        "group": 17
    },
    "54": {
        "name": "Xenon",
        "appearance": "colorless gas, exhibiting a blue glow when placed in a high voltage electric field",
        "atomic_mass": 131.2936,
        "bp": 165.051,
        "category": "noble gas",
        "color": null,
        "density": 5.894,
        "mp": 161.4,
        "molar_heat": null,
        "atomic_number": 54,
        "period": 5,
        "phase": "gas",
        "symbol": "Xe",
        "shells": [
            2,
            8,
            18,
            18,
            8
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6",
        "electron_configuration_semantic": "[Kr] 4d10 5s2 5p6",
        "electron_affinity": -77,
        "electronegativity_pauling": 2.6,
        "ionization_energies": [
            1170.4,
            2046.4,
            3099.4
        ],
        "cpk-hex": "429eb0",
        "group": 18
    },
    "55": {
        "name": "Cesium",
        "appearance": "silvery gold",
        "atomic_mass": 132.905451966,
        "bp": 944,
        "category": "alkali metal",
        "color": null,
        "density": 1.93,
        "mp": 301.7,
        "molar_heat": 32.21,
        "atomic_number": 55,
        "period": 6,
        "phase": "solid",
        "symbol": "Cs",
        "shells": [
            2,
            8,
            18,
            18,
            8,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1",
        "electron_configuration_semantic": "[Xe] 6s1",
        "electron_affinity": 45.505,
        "electronegativity_pauling": 0.79,
        "ionization_energies": [
            375.7,
            2234.3,
            3400
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        "cpk-hex": "57178f",
        "group": 1
    },
    "56": {
        "name": "Barium",
        "appearance": null,
        "atomic_mass": 137.3277,
        "bp": 2118,
        "category": "alkaline earth metal",
        "color": null,
        "density": 3.51,
        "mp": 1000,
        "molar_heat": 28.07,
        "atomic_number": 56,
        "period": 6,
        "phase": "solid",
        "symbol": "Ba",
        "shells": [
            2,
            8,
            18,
            18,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2",
        "electron_configuration_semantic": "[Xe] 6s2",
        "electron_affinity": 13.954,
        "electronegativity_pauling": 0.89,
        "ionization_energies": [
            502.9,
            965.2,
            3600
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        "cpk-hex": "00c900",
        "group": 2
    },
    "57": {
        "name": "Lanthanum",
        "appearance": "silvery white",
        "atomic_mass": 138.905477,
        "bp": 3737,
        "category": "lanthanide",
        "color": null,
        "density": 6.162,
        "mp": 1193,
        "molar_heat": 27.11,
        "atomic_number": 57,
        "period": 6,
        "phase": "solid",
        "symbol": "La",
        "shells": [
            2,
            8,
            18,
            18,
            9,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 5d1",
        "electron_configuration_semantic": "[Xe] 5d16s2",
        "electron_affinity": 53,
        "electronegativity_pauling": 1.1,
        "ionization_energies": [
            538.1,
            1067,
            1850.3,
            4819,
            5940
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        "cpk-hex": "70d4ff",
        "group": 3
    },
    "58": {
        "name": "Cerium",
        "appearance": "silvery white",
        "atomic_mass": 140.1161,
        "bp": 3716,
        "category": "lanthanide",
        "color": null,
        "density": 6.77,
        "mp": 1068,
        "molar_heat": 26.94,
        "atomic_number": 58,
        "period": 6,
        "phase": "solid",
        "symbol": "Ce",
        "shells": [
            2,
            8,
            18,
            19,
            9,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 5d1 4f1",
        "electron_configuration_semantic": "[Xe] 4f1 5d1 6s2",
        "electron_affinity": 55,
        "electronegativity_pauling": 1.12,
        "ionization_energies": [
            534.4,
            1050,
            1949,
            3547,
            6325,
            7490
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        "cpk-hex": "ffffc7",
        "group": 4
    },
    "59": {
        "name": "Praseodymium",
        "appearance": "grayish white",
        "atomic_mass": 140.907662,
        "bp": 3403,
        "category": "lanthanide",
        "color": null,
        "density": 6.77,
        "mp": 1208,
        "molar_heat": 27.2,
        "atomic_number": 59,
        "period": 6,
        "phase": "solid",
        "symbol": "Pr",
        "shells": [
            2,
            8,
            18,
            21,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f3",
        "electron_configuration_semantic": "[Xe] 4f3 6s2",
        "electron_affinity": 93,
        "electronegativity_pauling": 1.13,
        "ionization_energies": [
            527,
            1020,
            2086,
            3761,
            5551
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        "cpk-hex": "d9ffc7",
        "group": 5
    },
    "60": {
        "name": "Neodymium",
        "appearance": "silvery white",
        "atomic_mass": 144.2423,
        "bp": 3347,
        "category": "lanthanide",
        "color": null,
        "density": 7.01,
        "mp": 1297,
        "molar_heat": 27.45,
        "atomic_number": 60,
        "period": 6,
        "phase": "solid",
        "symbol": "Nd",
        "shells": [
            2,
            8,
            18,
            22,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f4",
        "electron_configuration_semantic": "[Xe] 4f4 6s2",
        "electron_affinity": 184.87,
        "electronegativity_pauling": 1.14,
        "ionization_energies": [
            533.1,
            1040,
            2130,
            3900
        ],
        "cpk-hex": "c7ffc7",
        "group": 6
    },
    "61": {
        "name": "Promethium",
        "appearance": "metallic",
        "atomic_mass": 145,
        "bp": 3273,
        "category": "lanthanide",
        "color": null,
        "density": 7.26,
        "mp": 1315,
        "molar_heat": null,
        "atomic_number": 61,
        "period": 6,
        "phase": "solid",
        "symbol": "Pm",
        "shells": [
            2,
            8,
            18,
            23,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f5",
        "electron_configuration_semantic": "[Xe] 4f5 6s2",
        "electron_affinity": 12.45,
        "electronegativity_pauling": 1.13,
        "ionization_energies": [
            540,
            1050,
            2150,
            3970
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        "cpk-hex": "a3ffc7",
        "group": 7
    },
    "62": {
        "name": "Samarium",
        "appearance": "silvery white",
        "atomic_mass": 150.362,
        "bp": 2173,
        "category": "lanthanide",
        "color": null,
        "density": 7.52,
        "mp": 1345,
        "molar_heat": 29.54,
        "atomic_number": 62,
        "period": 6,
        "phase": "solid",
        "symbol": "Sm",
        "shells": [
            2,
            8,
            18,
            24,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f6",
        "electron_configuration_semantic": "[Xe] 4f6 6s2",
        "electron_affinity": 15.63,
        "electronegativity_pauling": 1.17,
        "ionization_energies": [
            544.5,
            1070,
            2260,
            3990
        ],
        "cpk-hex": "8fffc7",
        "group": 8
    },
    "63": {
        "name": "Europium",
        "appearance": null,
        "atomic_mass": 151.9641,
        "bp": 1802,
        "category": "lanthanide",
        "color": null,
        "density": 5.264,
        "mp": 1099,
        "molar_heat": 27.66,
        "atomic_number": 63,
        "period": 6,
        "phase": "solid",
        "symbol": "Eu",
        "shells": [
            2,
            8,
            18,
            25,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f7",
        "electron_configuration_semantic": "[Xe] 4f7 6s2",
        "electron_affinity": 11.2,
        "electronegativity_pauling": 1.2,
        "ionization_energies": [
            547.1,
            1085,
            2404,
            4120
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        "cpk-hex": "61ffc7",
        "group": 9
    },
    "64": {
        "name": "Gadolinium",
        "appearance": "silvery white",
        "atomic_mass": 157.253,
        "bp": 3273,
        "category": "lanthanide",
        "color": null,
        "density": 7.9,
        "mp": 1585,
        "molar_heat": 37.03,
        "atomic_number": 64,
        "period": 6,
        "phase": "solid",
        "symbol": "Gd",
        "shells": [
            2,
            8,
            18,
            25,
            9,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f7 5d1",
        "electron_configuration_semantic": "[Xe] 4f7 5d1 6s2",
        "electron_affinity": 13.22,
        "electronegativity_pauling": 1.2,
        "ionization_energies": [
            593.4,
            1170,
            1990,
            4250
        ],
        "cpk-hex": "45ffc7",
        "group": 10
    },
    "65": {
        "name": "Terbium",
        "appearance": "silvery white",
        "atomic_mass": 158.925352,
        "bp": 3396,
        "category": "lanthanide",
        "color": null,
        "density": 8.23,
        "mp": 1629,
        "molar_heat": 28.91,
        "atomic_number": 65,
        "period": 6,
        "phase": "solid",
        "symbol": "Tb",
        "shells": [
            2,
            8,
            18,
            27,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f9",
        "electron_configuration_semantic": "[Xe] 4f9 6s2",
        "electron_affinity": 112.4,
        "electronegativity_pauling": 1.1,
        "ionization_energies": [
            565.8,
            1110,
            2114,
            3839
        ],
        "cpk-hex": "30ffc7",
        "group": 11
    },
    "66": {
        "name": "Dysprosium",
        "appearance": "silvery white",
        "atomic_mass": 162.5001,
        "bp": 2840,
        "category": "lanthanide",
        "color": null,
        "density": 8.54,
        "mp": 1680,
        "molar_heat": 27.7,
        "atomic_number": 66,
        "period": 6,
        "phase": "solid",
        "symbol": "Dy",
        "shells": [
            2,
            8,
            18,
            28,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f10",
        "electron_configuration_semantic": "[Xe] 4f10 6s2",
        "electron_affinity": 33.96,
        "electronegativity_pauling": 1.22,
        "ionization_energies": [
            573,
            1130,
            2200,
            3990
        ],
        "cpk-hex": "1fffc7",
        "group": 12
    },
    "67": {
        "name": "Holmium",
        "appearance": "silvery white",
        "atomic_mass": 164.930332,
        "bp": 2873,
        "category": "lanthanide",
        "color": null,
        "density": 8.79,
        "mp": 1734,
        "molar_heat": 27.15,
        "atomic_number": 67,
        "period": 6,
        "phase": "solid",
        "symbol": "Ho",
        "shells": [
            2,
            8,
            18,
            29,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f11",
        "electron_configuration_semantic": "[Xe] 4f11 6s2",
        "electron_affinity": 32.61,
        "electronegativity_pauling": 1.23,
        "ionization_energies": [
            581,
            1140,
            2204,
            4100
        ],
        "cpk-hex": "00ff9c",
        "group": 13
    },
    "68": {
        "name": "Erbium",
        "appearance": "silvery white",
        "atomic_mass": 167.2593,
        "bp": 3141,
        "category": "lanthanide",
        "color": null,
        "density": 9.066,
        "mp": 1802,
        "molar_heat": 28.12,
        "atomic_number": 68,
        "period": 6,
        "phase": "solid",
        "symbol": "Er",
        "shells": [
            2,
            8,
            18,
            30,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f12",
        "electron_configuration_semantic": "[Xe] 4f12 6s2",
        "electron_affinity": 30.1,
        "electronegativity_pauling": 1.24,
        "ionization_energies": [
            589.3,
            1150,
            2194,
            4120
        ],
        "cpk-hex": "00e675",
        "group": 14
    },
    "69": {
        "name": "Thulium",
        "appearance": "silvery gray",
        "atomic_mass": 168.934222,
        "bp": 2223,
        "category": "lanthanide",
        "color": null,
        "density": 9.32,
        "mp": 1818,
        "molar_heat": 27.03,
        "atomic_number": 69,
        "period": 6,
        "phase": "solid",
        "symbol": "Tm",
        "shells": [
            2,
            8,
            18,
            31,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f13",
        "electron_configuration_semantic": "[Xe] 4f13 6s2",
        "electron_affinity": 99,
        "electronegativity_pauling": 1.25,
        "ionization_energies": [
            596.7,
            1160,
            2285,
            4120
        ],
        "cpk-hex": "00d452",
        "group": 15
    },
    "70": {
        "name": "Ytterbium",
        "appearance": null,
        "atomic_mass": 173.0451,
        "bp": 1469,
        "category": "lanthanide",
        "color": null,
        "density": 6.9,
        "mp": 1097,
        "molar_heat": 26.74,
        "atomic_number": 70,
        "period": 6,
        "phase": "solid",
        "symbol": "Yb",
        "shells": [
            2,
            8,
            18,
            32,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14",
        "electron_configuration_semantic": "[Xe] 4f14 6s2",
        "electron_affinity": -1.93,
        "electronegativity_pauling": 1.1,
        "ionization_energies": [
            603.4,
            1174.8,
            2417,
            4203
        ],
        "cpk-hex": "00bf38",
        "group": 16
    },
    "71": {
        "name": "Lutetium",
        "appearance": "silvery white",
        "atomic_mass": 174.96681,
        "bp": 3675,
        "category": "lanthanide",
        "color": null,
        "density": 9.841,
        "mp": 1925,
        "molar_heat": 26.86,
        "atomic_number": 71,
        "period": 6,
        "phase": "solid",
        "symbol": "Lu",
        "shells": [
            2,
            8,
            18,
            32,
            9,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d1",
        "electron_configuration_semantic": "[Xe] 4f14 5d1 6s2",
        "electron_affinity": 33.4,
        "electronegativity_pauling": 1.27,
        "ionization_energies": [
            523.5,
            1340,
            2022.3,
            4370,
            6445
        ],
        "cpk-hex": "00ab24",
        "group": 17
    },
    "72": {
        "name": "Hafnium",
        "appearance": "steel gray",
        "atomic_mass": 178.492,
        "bp": 4876,
        "category": "transition metal",
        "color": null,
        "density": 13.31,
        "mp": 2506,
        "molar_heat": 25.73,
        "atomic_number": 72,
        "period": 6,
        "phase": "solid",
        "symbol": "Hf",
        "shells": [
            2,
            8,
            18,
            32,
            10,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d2",
        "electron_configuration_semantic": "[Xe] 4f14 5d2 6s2",
        "electron_affinity": 17.18,
        "electronegativity_pauling": 1.3,
        "ionization_energies": [
            658.5,
            1440,
            2250,
            3216
        ],
        "cpk-hex": "4dc2ff",
        "group": 4
    },
    "73": {
        "name": "Tantalum",
        "appearance": "gray blue",
        "atomic_mass": 180.947882,
        "bp": 5731,
        "category": "transition metal",
        "color": null,
        "density": 16.69,
        "mp": 3290,
        "molar_heat": 25.36,
        "atomic_number": 73,
        "period": 6,
        "phase": "solid",
        "symbol": "Ta",
        "shells": [
            2,
            8,
            18,
            32,
            11,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d3",
        "electron_configuration_semantic": "[Xe] 4f14 5d3 6s2",
        "electron_affinity": 31,
        "electronegativity_pauling": 1.5,
        "ionization_energies": [
            761,
            1500
        ],
        "cpk-hex": "4da6ff",
        "group": 5
    },
    "74": {
        "name": "Tungsten",
        "appearance": "grayish white, lustrous",
        "atomic_mass": 183.841,
        "bp": 6203,
        "category": "transition metal",
        "color": null,
        "density": 19.25,
        "mp": 3695,
        "molar_heat": 24.27,
        "atomic_number": 74,
        "period": 6,
        "phase": "solid",
        "symbol": "W",
        "shells": [
            2,
            8,
            18,
            32,
            12,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d4",
        "electron_configuration_semantic": "[Xe] 4f14 5d4 6s2",
        "electron_affinity": 78.76,
        "electronegativity_pauling": 2.36,
        "ionization_energies": [
            770,
            1700
        ],
        "cpk-hex": "2194d6",
        "group": 6
    },
    "75": {
        "name": "Rhenium",
        "appearance": "silvery-grayish",
        "atomic_mass": 186.2071,
        "bp": 5869,
        "category": "transition metal",
        "color": null,
        "density": 21.02,
        "mp": 3459,
        "molar_heat": 25.48,
        "atomic_number": 75,
        "period": 6,
        "phase": "solid",
        "symbol": "Re",
        "shells": [
            2,
            8,
            18,
            32,
            13,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d5",
        "electron_configuration_semantic": "[Xe] 4f14 5d5 6s2",
        "electron_affinity": 5.8273,
        "electronegativity_pauling": 1.9,
        "ionization_energies": [
            760,
            1260,
            2510,
            3640
        ],
        "cpk-hex": "267dab",
        "group": 7
    },
    "76": {
        "name": "Osmium",
        "appearance": "silvery, blue cast",
        "atomic_mass": 190.233,
        "bp": 5285,
        "category": "transition metal",
        "color": null,
        "density": 22.59,
        "mp": 3306,
        "molar_heat": 24.7,
        "atomic_number": 76,
        "period": 6,
        "phase": "solid",
        "symbol": "Os",
        "shells": [
            2,
            8,
            18,
            32,
            14,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d6",
        "electron_configuration_semantic": "[Xe] 4f14 5d6 6s2",
        "electron_affinity": 103.99,
        "electronegativity_pauling": 2.2,
        "ionization_energies": [
            840,
            1600
        ],
        "cpk-hex": "266696",
        "group": 8
    },
    "77": {
        "name": "Iridium",
        "appearance": "silvery white",
        "atomic_mass": 192.2173,
        "bp": 4403,
        "category": "transition metal",
        "color": null,
        "density": 22.56,
        "mp": 2719,
        "molar_heat": 25.1,
        "atomic_number": 77,
        "period": 6,
        "phase": "solid",
        "symbol": "Ir",
        "shells": [
            2,
            8,
            18,
            32,
            15,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d7",
        "electron_configuration_semantic": "[Xe] 4f14 5d7 6s2",
        "electron_affinity": 150.94,
        "electronegativity_pauling": 2.2,
        "ionization_energies": [
            880,
            1600
        ],
        "cpk-hex": "175487",
        "group": 9
    },
    "78": {
        "name": "Platinum",
        "appearance": "silvery white",
        "atomic_mass": 195.0849,
        "bp": 4098,
        "category": "transition metal",
        "color": null,
        "density": 21.45,
        "mp": 2041.4,
        "molar_heat": 25.86,
        "atomic_number": 78,
        "period": 6,
        "phase": "solid",
        "symbol": "Pt",
        "shells": [
            2,
            8,
            18,
            32,
            17,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1 4f14 5d9",
        "electron_configuration_semantic": "[Xe] 4f14 5d9 6s1",
        "electron_affinity": 205.041,
        "electronegativity_pauling": 2.28,
        "ionization_energies": [
            870,
            1791
        ],
        "cpk-hex": "d0d0e0",
        "group": 10
    },
    "79": {
        "name": "Gold",
        "appearance": "metallic yellow",
        "atomic_mass": 196.9665695,
        "bp": 3243,
        "category": "transition metal",
        "color": null,
        "density": 19.3,
        "mp": 1337.33,
        "molar_heat": 25.418,
        "atomic_number": 79,
        "period": 6,
        "phase": "solid",
        "symbol": "Au",
        "shells": [
            2,
            8,
            18,
            32,
            18,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1 4f14 5d10",
        "electron_configuration_semantic": "[Xe] 4f14 5d10 6s1",
        "electron_affinity": 222.747,
        "electronegativity_pauling": 2.54,
        "ionization_energies": [
            890.1,
            1980
        ],
        "cpk-hex": "ffd123",
        "group": 11
    },
    "80": {
        "name": "Mercury",
        "appearance": "silvery",
        "atomic_mass": 200.5923,
        "bp": 629.88,
        "category": "transition metal",
        "color": null,
        "density": 13.534,
        "mp": 234.321,
        "molar_heat": 27.983,
        "atomic_number": 80,
        "period": 6,
        "phase": "liquid",
        "symbol": "Hg",
        "shells": [
            2,
            8,
            18,
            32,
            18,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10",
        "electron_configuration_semantic": "[Xe] 4f14 5d10 6s2",
        "electron_affinity": -48,
        "electronegativity_pauling": 2,
        "ionization_energies": [
            1007.1,
            1810,
            3300
        ],
        "cpk-hex": "b8b8d0",
        "group": 12
    },
    "81": {
        "name": "Thallium",
        "appearance": "silvery white",
        "atomic_mass": 204.38,
        "bp": 1746,
        "category": "post_processing-transition metal",
        "color": null,
        "density": 11.85,
        "mp": 577,
        "molar_heat": 26.32,
        "atomic_number": 81,
        "period": 6,
        "phase": "solid",
        "symbol": "Tl",
        "shells": [
            2,
            8,
            18,
            32,
            18,
            3
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p1",
        "electron_configuration_semantic": "[Xe] 4f14 5d10 6s2 6p1",
        "electron_affinity": 36.4,
        "electronegativity_pauling": 1.62,
        "ionization_energies": [
            589.4,
            1971,
            2878
        ],
        "cpk-hex": "a6544d",
        "group": 13
    },
    "82": {
        "name": "Lead",
        "appearance": "metallic gray",
        "atomic_mass": 207.21,
        "bp": 2022,
        "category": "post_processing-transition metal",
        "color": null,
        "density": 11.34,
        "mp": 600.61,
        "molar_heat": 26.65,
        "atomic_number": 82,
        "period": 6,
        "phase": "solid",
        "symbol": "Pb",
        "shells": [
            2,
            8,
            18,
            32,
            18,
            4
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p2",
        "electron_configuration_semantic": "[Xe] 4f14 5d10 6s2 6p2",
        "electron_affinity": 34.4204,
        "electronegativity_pauling": 1.87,
        "ionization_energies": [
            715.6,
            1450.5,
            3081.5,
            4083,
            6640
        ],
        "cpk-hex": "575961",
        "group": 14
    },
    "83": {
        "name": "Bismuth",
        "appearance": "lustrous silver",
        "atomic_mass": 208.980401,
        "bp": 1837,
        "category": "post_processing-transition metal",
        "color": null,
        "density": 9.78,
        "mp": 544.7,
        "molar_heat": 25.52,
        "atomic_number": 83,
        "period": 6,
        "phase": "solid",
        "symbol": "Bi",
        "shells": [
            2,
            8,
            18,
            32,
            18,
            5
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p3",
        "electron_configuration_semantic": "[Xe] 4f14 5d10 6s2 6p3",
        "electron_affinity": 90.924,
        "electronegativity_pauling": 2.02,
        "ionization_energies": [
            703,
            1610,
            2466,
            4370,
            5400,
            8520
        ],
        "cpk-hex": "9e4fb5",
        "group": 15
    },
    "84": {
        "name": "Polonium",
        "appearance": "silvery",
        "atomic_mass": 209,
        "bp": 1235,
        "category": "post_processing-transition metal",
        "color": null,
        "density": 9.196,
        "mp": 527,
        "molar_heat": 26.4,
        "atomic_number": 84,
        "period": 6,
        "phase": "solid",
        "symbol": "Po",
        "shells": [
            2,
            8,
            18,
            32,
            18,
            6
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p4",
        "electron_configuration_semantic": "[Xe] 4f14 5d10 6s2 6p4",
        "electron_affinity": 136,
        "electronegativity_pauling": 2,
        "ionization_energies": [
            812.1
        ],
        "cpk-hex": "ab5c00",
        "group": 16
    },
    "85": {
        "name": "Astatine",
        "appearance": "unknown, probably metallic",
        "atomic_mass": 210,
        "bp": 610,
        "category": "metalloid",
        "color": null,
        "density": 6.35,
        "mp": 575,
        "molar_heat": null,
        "atomic_number": 85,
        "period": 6,
        "phase": "solid",
        "symbol": "At",
        "shells": [
            2,
            8,
            18,
            32,
            18,
            7
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p5",
        "electron_configuration_semantic": "[Xe] 4f14 5d10 6s2 6p5",
        "electron_affinity": 233,
        "electronegativity_pauling": 2.2,
        "ionization_energies": [
            899.003
        ],
        "cpk-hex": "754f45",
        "group": 17
    },
    "86": {
        "name": "Radon",
        "appearance": "colorless gas, occasionally glows green or red in discharge tubes",
        "atomic_mass": 222,
        "bp": 211.5,
        "category": "noble gas",
        "color": null,
        "density": 9.73,
        "mp": 202,
        "molar_heat": null,
        "atomic_number": 86,
        "period": 6,
        "phase": "gas",
        "symbol": "Rn",
        "shells": [
            2,
            8,
            18,
            32,
            18,
            8
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6",
        "electron_configuration_semantic": "[Xe] 4f14 5d10 6s2 6p6",
        "electron_affinity": -68,
        "electronegativity_pauling": 2.2,
        "ionization_energies": [
            1037
        ],
        "cpk-hex": "428296",
        "group": 18
    },
    "87": {
        "name": "Francium",
        "appearance": null,
        "atomic_mass": 223,
        "bp": 950,
        "category": "alkali metal",
        "color": null,
        "density": 1.87,
        "mp": 300,
        "molar_heat": null,
        "atomic_number": 87,
        "period": 7,
        "phase": "solid",
        "symbol": "Fr",
        "shells": [
            2,
            8,
            18,
            32,
            18,
            8,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s1",
        "electron_configuration_semantic": "[Rn] 7s1",
        "electron_affinity": 46.89,
        "electronegativity_pauling": 0.79,
        "ionization_energies": [
            380
        ],
        "cpk-hex": "420066",
        "group": 1
    },
    "88": {
        "name": "Radium",
        "appearance": "silvery white metallic",
        "atomic_mass": 226,
        "bp": 2010,
        "category": "alkaline earth metal",
        "color": null,
        "density": 5.5,
        "mp": 1233,
        "molar_heat": null,
        "atomic_number": 88,
        "period": 7,
        "phase": "solid",
        "symbol": "Ra",
        "shells": [
            2,
            8,
            18,
            32,
            18,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2",
        "electron_configuration_semantic": "[Rn] 7s2",
        "electron_affinity": 9.6485,
        "electronegativity_pauling": 0.9,
        "ionization_energies": [
            509.3,
            979
        ],
        "cpk-hex": "007d00",
        "group": 2
    },
    "89": {
        "name": "Actinium",
        "appearance": null,
        "atomic_mass": 227,
        "bp": 3500,
        "category": "actinide",
        "color": null,
        "density": 10,
        "mp": 1500,
        "molar_heat": 27.2,
        "atomic_number": 89,
        "period": 7,
        "phase": "solid",
        "symbol": "Ac",
        "shells": [
            2,
            8,
            18,
            32,
            18,
            9,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 6d1",
        "electron_configuration_semantic": "[Rn] 6d1 7s2",
        "electron_affinity": 33.77,
        "electronegativity_pauling": 1.1,
        "ionization_energies": [
            499,
            1170
        ],
        "cpk-hex": "70abfa",
        "group": 3
    },
    "90": {
        "name": "Thorium",
        "appearance": "silvery, often with black tarnish",
        "atomic_mass": 232.03774,
        "bp": 5061,
        "category": "actinide",
        "color": null,
        "density": 11.724,
        "mp": 2023,
        "molar_heat": 26.23,
        "atomic_number": 90,
        "period": 7,
        "phase": "solid",
        "symbol": "Th",
        "shells": [
            2,
            8,
            18,
            32,
            18,
            10,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 6d2",
        "electron_configuration_semantic": "[Rn] 6d2 7s2",
        "electron_affinity": 112.72,
        "electronegativity_pauling": 1.3,
        "ionization_energies": [
            587,
            1110,
            1930,
            2780
        ],
        "cpk-hex": "00baff",
        "group": 4
    },
    "91": {
        "name": "Protactinium",
        "appearance": "bright, silvery metallic luster",
        "atomic_mass": 231.035882,
        "bp": 4300,
        "category": "actinide",
        "color": null,
        "density": 15.37,
        "mp": 1841,
        "molar_heat": null,
        "atomic_number": 91,
        "period": 7,
        "phase": "solid",
        "symbol": "Pa",
        "shells": [
            2,
            8,
            18,
            32,
            20,
            9,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f2 6d1",
        "electron_configuration_semantic": "[Rn] 5f2 6d1 7s2",
        "electron_affinity": 53.03,
        "electronegativity_pauling": 1.5,
        "ionization_energies": [
            568
        ],
        "cpk-hex": "00a1ff",
        "group": 5
    },
    "92": {
        "name": "Uranium",
        "appearance": null,
        "atomic_mass": 238.028913,
        "bp": 4404,
        "category": "actinide",
        "color": null,
        "density": 19.1,
        "mp": 1405.3,
        "molar_heat": 27.665,
        "atomic_number": 92,
        "period": 7,
        "phase": "solid",
        "symbol": "U",
        "shells": [
            2,
            8,
            18,
            32,
            21,
            9,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f3 6d1",
        "electron_configuration_semantic": "[Rn] 5f3 6d1 7s2",
        "electron_affinity": 50.94,
        "electronegativity_pauling": 1.38,
        "ionization_energies": [
            597.6,
            1420
        ],
        "cpk-hex": "008fff",
        "group": 6
    },
    "93": {
        "name": "Neptunium",
        "appearance": "silvery metallic",
        "atomic_mass": 237,
        "bp": 4447,
        "category": "actinide",
        "color": null,
        "density": 20.45,
        "mp": 912,
        "molar_heat": 29.46,
        "atomic_number": 93,
        "period": 7,
        "phase": "solid",
        "symbol": "Np",
        "shells": [
            2,
            8,
            18,
            32,
            22,
            9,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f4 6d1",
        "electron_configuration_semantic": "[Rn] 5f4 6d1 7s2",
        "electron_affinity": 45.85,
        "electronegativity_pauling": 1.36,
        "ionization_energies": [
            604.5
        ],
        "cpk-hex": "0080ff",
        "group": 7
    },
    "94": {
        "name": "Plutonium",
        "appearance": "silvery white, tarnishing to dark gray in air",
        "atomic_mass": 244,
        "bp": 3505,
        "category": "actinide",
        "color": null,
        "density": 19.816,
        "mp": 912.5,
        "molar_heat": 35.5,
        "atomic_number": 94,
        "period": 7,
        "phase": "solid",
        "symbol": "Pu",
        "shells": [
            2,
            8,
            18,
            32,
            24,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f6",
        "electron_configuration_semantic": "[Rn] 5f6 7s2",
        "electron_affinity": -48.33,
        "electronegativity_pauling": 1.28,
        "ionization_energies": [
            584.7
        ],
        "cpk-hex": "006bff",
        "group": 8
    },
    "95": {
        "name": "Americium",
        "appearance": "silvery white",
        "atomic_mass": 243,
        "bp": 2880,
        "category": "actinide",
        "color": null,
        "density": 12,
        "mp": 1449,
        "molar_heat": 62.7,
        "atomic_number": 95,
        "period": 7,
        "phase": "solid",
        "symbol": "Am",
        "shells": [
            2,
            8,
            18,
            32,
            25,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f7",
        "electron_configuration_semantic": "[Rn] 5f7 7s2",
        "electron_affinity": 9.93,
        "electronegativity_pauling": 1.13,
        "ionization_energies": [
            578
        ],
        "cpk-hex": "545cf2",
        "group": 9
    },
    "96": {
        "name": "Curium",
        "appearance": "silvery metallic, glows purple in the dark",
        "atomic_mass": 247,
        "bp": 3383,
        "category": "actinide",
        "color": null,
        "density": 13.51,
        "mp": 1613,
        "molar_heat": null,
        "atomic_number": 96,
        "period": 7,
        "phase": "solid",
        "symbol": "Cm",
        "shells": [
            2,
            8,
            18,
            32,
            25,
            9,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f7 6d1",
        "electron_configuration_semantic": "[Rn] 5f7 6d1 7s2",
        "electron_affinity": 27.17,
        "electronegativity_pauling": 1.28,
        "ionization_energies": [
            581
        ],
        "cpk-hex": "785ce3",
        "group": 10
    },
    "97": {
        "name": "Berkelium",
        "appearance": "silvery",
        "atomic_mass": 247,
        "bp": 2900,
        "category": "actinide",
        "color": null,
        "density": 14.78,
        "mp": 1259,
        "molar_heat": null,
        "atomic_number": 97,
        "period": 7,
        "phase": "solid",
        "symbol": "Bk",
        "shells": [
            2,
            8,
            18,
            32,
            27,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f9",
        "electron_configuration_semantic": "[Rn] 5f9 7s2",
        "electron_affinity": -165.24,
        "electronegativity_pauling": 1.3,
        "ionization_energies": [
            601
        ],
        "cpk-hex": "8a4fe3",
        "group": 11
    },
    "98": {
        "name": "Californium",
        "appearance": "silvery",
        "atomic_mass": 251,
        "bp": 1743,
        "category": "actinide",
        "color": null,
        "density": 15.1,
        "mp": 1173,
        "molar_heat": null,
        "atomic_number": 98,
        "period": 7,
        "phase": "solid",
        "symbol": "Cf",
        "shells": [
            2,
            8,
            18,
            32,
            28,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f10",
        "electron_configuration_semantic": "[Rn] 5f10 7s2",
        "electron_affinity": -97.31,
        "electronegativity_pauling": 1.3,
        "ionization_energies": [
            608
        ],
        "cpk-hex": "a136d4",
        "group": 12
    },
    "99": {
        "name": "Einsteinium",
        "appearance": "silver-colored",
        "atomic_mass": 252,
        "bp": 1269,
        "category": "actinide",
        "color": null,
        "density": 8.84,
        "mp": 1133,
        "molar_heat": null,
        "atomic_number": 99,
        "period": 7,
        "phase": "solid",
        "symbol": "Es",
        "shells": [
            2,
            8,
            18,
            32,
            29,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f11",
        "electron_configuration_semantic": "[Rn] 5f11 7s2",
        "electron_affinity": -28.6,
        "electronegativity_pauling": 1.3,
        "ionization_energies": [
            619
        ],
        "cpk-hex": "b31fd4",
        "group": 13
    },
    "100": {
        "name": "Fermium",
        "appearance": null,
        "atomic_mass": 257,
        "bp": null,
        "category": "actinide",
        "color": null,
        "density": null,
        "mp": 1800,
        "molar_heat": null,
        "atomic_number": 100,
        "period": 7,
        "phase": "solid",
        "symbol": "Fm",
        "shells": [
            2,
            8,
            18,
            32,
            30,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f12",
        "electron_configuration_semantic": "[Rn] 5f12 7s2",
        "electron_affinity": 33.96,
        "electronegativity_pauling": 1.3,
        "ionization_energies": [
            627
        ],
        "cpk-hex": "b31fba",
        "group": 14
    },
    "101": {
        "name": "Mendelevium",
        "appearance": null,
        "atomic_mass": 258,
        "bp": null,
        "category": "actinide",
        "color": null,
        "density": null,
        "mp": 1100,
        "molar_heat": null,
        "atomic_number": 101,
        "period": 7,
        "phase": "solid",
        "symbol": "Md",
        "shells": [
            2,
            8,
            18,
            32,
            31,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f13",
        "electron_configuration_semantic": "[Rn] 5f13 7s2",
        "electron_affinity": 93.91,
        "electronegativity_pauling": 1.3,
        "ionization_energies": [
            635
        ],
        "cpk-hex": "b30da6",
        "group": 15
    },
    "102": {
        "name": "Nobelium",
        "appearance": null,
        "atomic_mass": 259,
        "bp": null,
        "category": "actinide",
        "color": null,
        "density": null,
        "mp": 1100,
        "molar_heat": null,
        "atomic_number": 102,
        "period": 7,
        "phase": "solid",
        "symbol": "No",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            8,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14",
        "electron_configuration_semantic": "[Rn] 5f14 7s2",
        "electron_affinity": -223.22,
        "electronegativity_pauling": 1.3,
        "ionization_energies": [
            642
        ],
        "cpk-hex": "bd0d87",
        "group": 16
    },
    "103": {
        "name": "Lawrencium",
        "appearance": null,
        "atomic_mass": 266,
        "bp": null,
        "category": "actinide",
        "color": null,
        "density": null,
        "mp": 1900,
        "molar_heat": null,
        "atomic_number": 103,
        "period": 7,
        "phase": "solid",
        "symbol": "Lr",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            8,
            3
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 7p1",
        "electron_configuration_semantic": "[Rn] 5f14 7s2 7p1",
        "electron_affinity": -30.04,
        "electronegativity_pauling": 1.3,
        "ionization_energies": [
            470
        ],
        "cpk-hex": "c70066",
        "group": 17
    },
    "104": {
        "name": "Rutherfordium",
        "appearance": null,
        "atomic_mass": 267,
        "bp": 5800,
        "category": "transition metal",
        "color": null,
        "density": 23.2,
        "mp": 2400,
        "molar_heat": null,
        "atomic_number": 104,
        "period": 7,
        "phase": "solid",
        "symbol": "Rf",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            10,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d2",
        "electron_configuration_semantic": "[Rn] 5f14 6d2 7s2",
        "electron_affinity": null,
        "electronegativity_pauling": null,
        "ionization_energies": [
            580
        ],
        "cpk-hex": "cc0059",
        "group": 4
    },
    "105": {
        "name": "Dubnium",
        "appearance": null,
        "atomic_mass": 268,
        "bp": null,
        "category": "transition metal",
        "color": null,
        "density": 29.3,
        "mp": null,
        "molar_heat": null,
        "atomic_number": 105,
        "period": 7,
        "phase": "solid",
        "symbol": "Db",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            11,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d3",
        "electron_configuration_semantic": "*[Rn] 5f14 6d3 7s2",
        "electron_affinity": null,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": "d1004f",
        "group": 5
    },
    "106": {
        "name": "Seaborgium",
        "appearance": null,
        "atomic_mass": 269,
        "bp": null,
        "category": "transition metal",
        "color": null,
        "density": 35,
        "mp": null,
        "molar_heat": null,
        "atomic_number": 106,
        "period": 7,
        "phase": "solid",
        "symbol": "Sg",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            12,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d4",
        "electron_configuration_semantic": "*[Rn] 5f14 6d4 7s2",
        "electron_affinity": null,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": "d90045",
        "group": 6
    },
    "107": {
        "name": "Bohrium",
        "appearance": null,
        "atomic_mass": 270,
        "bp": null,
        "category": "transition metal",
        "color": null,
        "density": 37.1,
        "mp": null,
        "molar_heat": null,
        "atomic_number": 107,
        "period": 7,
        "phase": "solid",
        "symbol": "Bh",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            13,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d5",
        "electron_configuration_semantic": "*[Rn] 5f14 6d5 7s2",
        "electron_affinity": null,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": "e00038",
        "group": 7
    },
    "108": {
        "name": "Hassium",
        "appearance": null,
        "atomic_mass": 269,
        "bp": null,
        "category": "transition metal",
        "color": null,
        "density": 40.7,
        "mp": 126,
        "molar_heat": null,
        "atomic_number": 108,
        "period": 7,
        "phase": "solid",
        "symbol": "Hs",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            14,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d6",
        "electron_configuration_semantic": "*[Rn] 5f14 6d6 7s2",
        "electron_affinity": null,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": "e6002e",
        "group": 8
    },
    "109": {
        "name": "Meitnerium",
        "appearance": null,
        "atomic_mass": 278,
        "bp": null,
        "category": "unknown, probably transition metal",
        "color": null,
        "density": 37.4,
        "mp": null,
        "molar_heat": null,
        "atomic_number": 109,
        "period": 7,
        "phase": "solid",
        "symbol": "Mt",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            15,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d7",
        "electron_configuration_semantic": "*[Rn] 5f14 6d7 7s2",
        "electron_affinity": null,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": "eb0026",
        "group": 9
    },
    "110": {
        "name": "Darmstadtium",
        "appearance": null,
        "atomic_mass": 281,
        "bp": null,
        "category": "unknown, probably transition metal",
        "color": null,
        "density": 34.8,
        "mp": null,
        "molar_heat": null,
        "atomic_number": 110,
        "period": 7,
        "phase": "solid",
        "symbol": "Ds",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            16,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d8",
        "electron_configuration_semantic": "*[Rn] 5f14 6d9 7s1",
        "electron_affinity": null,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": null,
        "group": 10
    },
    "111": {
        "name": "Roentgenium",
        "appearance": null,
        "atomic_mass": 282,
        "bp": null,
        "category": "unknown, probably transition metal",
        "color": null,
        "density": 28.7,
        "mp": null,
        "molar_heat": null,
        "atomic_number": 111,
        "period": 7,
        "phase": "solid",
        "symbol": "Rg",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            17,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d9",
        "electron_configuration_semantic": "*[Rn] 5f14 6d10 7s1",
        "electron_affinity": 151,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": null,
        "group": 11
    },
    "112": {
        "name": "Copernicium",
        "appearance": null,
        "atomic_mass": 285,
        "bp": 3570,
        "category": "transition metal",
        "color": null,
        "density": 23.7,
        "mp": null,
        "molar_heat": null,
        "atomic_number": 112,
        "period": 7,
        "phase": "gas",
        "symbol": "Cn",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            18,
            2
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10",
        "electron_configuration_semantic": "*[Rn] 5f14 6d10 7s2",
        "electron_affinity": null,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": null,
        "group": 12
    },
    "113": {
        "name": "Nihonium",
        "appearance": null,
        "atomic_mass": 286,
        "bp": 1430,
        "category": "unknown, probably transition metal",
        "color": null,
        "density": 16,
        "mp": 700,
        "molar_heat": null,
        "atomic_number": 113,
        "period": 7,
        "phase": "solid",
        "symbol": "Nh",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            18,
            3
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p1",
        "electron_configuration_semantic": "*[Rn] 5f14 6d10 7s2 7p1",
        "electron_affinity": 66.6,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": null,
        "group": 13
    },
    "114": {
        "name": "Flerovium",
        "appearance": null,
        "atomic_mass": 289,
        "bp": 420,
        "category": "post_processing-transition metal",
        "color": null,
        "density": 14,
        "mp": 340,
        "molar_heat": null,
        "atomic_number": 114,
        "period": 7,
        "phase": "solid",
        "symbol": "Fl",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            18,
            4
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p2",
        "electron_configuration_semantic": "*[Rn] 5f14 6d10 7s2 7p2",
        "electron_affinity": null,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": null,
        "group": 14
    },
    "115": {
        "name": "Moscovium",
        "appearance": null,
        "atomic_mass": 289,
        "bp": 1400,
        "category": "unknown, probably post_processing-transition metal",
        "color": null,
        "density": 13.5,
        "mp": 670,
        "molar_heat": null,
        "atomic_number": 115,
        "period": 7,
        "phase": "solid",
        "symbol": "Mc",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            18,
            5
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p3",
        "electron_configuration_semantic": "*[Rn] 5f14 6d10 7s2 7p3",
        "electron_affinity": 35.3,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": null,
        "group": 15
    },
    "116": {
        "name": "Livermorium",
        "appearance": null,
        "atomic_mass": 293,
        "bp": 1085,
        "category": "unknown, probably post_processing-transition metal",
        "color": null,
        "density": 12.9,
        "mp": 709,
        "molar_heat": null,
        "atomic_number": 116,
        "period": 7,
        "phase": "solid",
        "symbol": "Lv",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            18,
            6
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p4",
        "electron_configuration_semantic": "*[Rn] 5f14 6d10 7s2 7p4",
        "electron_affinity": 74.9,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": null,
        "group": 16
    },
    "117": {
        "name": "Tennessine",
        "appearance": null,
        "atomic_mass": 294,
        "bp": 883,
        "category": "unknown, probably metalloid",
        "color": null,
        "density": 7.17,
        "mp": 723,
        "molar_heat": null,
        "atomic_number": 117,
        "period": 7,
        "phase": "solid",
        "symbol": "Ts",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            18,
            7
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p5",
        "electron_configuration_semantic": "*[Rn] 5f14 6d10 7s2 7p5",
        "electron_affinity": 165.9,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": null,
        "group": 17
    },
    "118": {
        "name": "Oganesson",
        "appearance": null,
        "atomic_mass": 294,
        "bp": 350,
        "category": "unknown, predicted to be noble gas",
        "color": null,
        "density": 4.95,
        "mp": null,
        "molar_heat": null,
        "atomic_number": 118,
        "period": 7,
        "phase": "solid",
        "symbol": "Og",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            18,
            8
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p6",
        "electron_configuration_semantic": "*[Rn] 5f14 6d10 7s2 7p6",
        "electron_affinity": 5.40318,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": null,
        "group": 18
    },
    "119": {
        "name": "Ununennium",
        "appearance": null,
        "atomic_mass": 315,
        "bp": 630,
        "category": "unknown, but predicted to be an alkali metal",
        "color": null,
        "density": 3,
        "mp": null,
        "molar_heat": null,
        "atomic_number": 119,
        "period": 8,
        "phase": "solid",
        "symbol": "Uue",
        "shells": [
            2,
            8,
            18,
            32,
            32,
            18,
            8,
            1
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p6 8s1",
        "electron_configuration_semantic": "*[Uuo] 8s1",
        "electron_affinity": 63.87,
        "electronegativity_pauling": null,
        "ionization_energies": [],
        "cpk-hex": null,
        "group": 1
    }
}