chemical-elements-data.js

export default {
  "h":
  {
    "symbol": "H",
    "name": "Hydrogen",
    "group": "other-nonmetal",
    "atomic-number": 1,
    "electron-configuration": [
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.2,
    "atomic-weight": 1.0079,
    "melting-point": 13.99,
    "boiling-point": 20.271
  },
  "he":
  {
    "symbol": "He",
    "name": "Helium",
    "group": "noble-gas",
    "atomic-number": 2,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": "no data",
    "atomic-weight": 4.0026,
    "melting-point": 0.95,
    "boiling-point": 4.222
  },


  "li":
  {
    "symbol": "Li",
    "name": "Lithium",
    "group": "alkali-metal",
    "atomic-number": 3,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 0.98,
    "atomic-weight": 6.94,
    "melting-point": 453.65,
    "boiling-point": 1603
  },
  "be":
  {
    "symbol": "Be",
    "name": "Beryllium",
    "group": "alkaline-earth-metal",
    "atomic-number": 4,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.57,
    "atomic-weight": 9.0121831,
    "melting-point": 1560,
    "boiling-point": 2742
  },
  "b":
  {
    "symbol": "B",
    "name": "Boron",
    "group": "metalloid",
    "atomic-number": 5,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 1, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.04,
    "atomic-weight": 10.81,
    "melting-point": 2349,
    "boiling-point": 4200
  },
  "c":
  {
    "symbol": "C",
    "name": "Carbon",
    "group": "other-nonmetal",
    "atomic-number": 6,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 2, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.55,
    "atomic-weight": 12.011,
    "melting-point": "-",
    "boiling-point": "-"
  },
  "n":
  {
    "symbol": "N",
    "name": "Nitrogen",
    "group": "other-nonmetal",
    "atomic-number": 7,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 3, "d": 0, "f": 0 }
    ],
    "electronegativity": 3.04,
    "atomic-weight": 14.007,
    "melting-point": 63.15,
    "boiling-point": 77.355
  },
  "o":
  {
    "symbol": "O",
    "name": "Oxygen",
    "group": "other-nonmetal",
    "atomic-number": 8,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 4, "d": 0, "f": 0 }
    ],
    "electronegativity": 3.44,
    "atomic-weight": 15.999,
    "melting-point": 54.36,
    "boiling-point": 90.188
  },
  "f":
  {
    "symbol": "F",
    "name": "Fluorine",
    "group": "halogen",
    "atomic-number": 9,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 5, "d": 0, "f": 0 }
    ],
    "electronegativity": 3.98,
    "atomic-weight": 18.998403163,
    "melting-point": 53.48,
    "boiling-point": 85.03
  },
  "ne":
  {
    "symbol": "Ne",
    "name": "Neon",
    "group": "noble-gas",
    "atomic-number": 10,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 }
    ],
    "electronegativity": "no data",
    "atomic-weight": 20.1797,
    "melting-point": 24.56,
    "boiling-point": 27.104
  },


  "na":
  {
    "symbol": "Na",
    "name": "Sodium",
    "group": "alkali-metal",
    "atomic-number": 11,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 0.93,
    "atomic-weight": 22.98976928,
    "melting-point": 370.944,
    "boiling-point": 208.029
  },
  "mg":
  {
    "symbol": "Mg",
    "name": "Magnesium",
    "group": "alkaline-earth-metal",
    "atomic-number": 12,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.31,
    "atomic-weight": 24.305,
    "melting-point": 923,
    "boiling-point": 1363
  },
  "al":
  {
    "symbol": "Al",
    "name": "Aluminium",
    "group": "post-transition-metal",
    "atomic-number": 13,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 1, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.61,
    "atomic-weight": 26.9815385,
    "melting-point": 933.47,
    "boiling-point": 2743
  },
  "si":
  {
    "symbol": "Si",
    "name": "Silicon",
    "group": "metalloid",
    "atomic-number": 14,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 2, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.90,
    "atomic-weight": 28.085,
    "melting-point": 1687,
    "boiling-point": 3538
  },
  "p":
  {
    "symbol": "P",
    "name": "Phosphorus",
    "group": "other-nonmetal",
    "atomic-number": 15,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 3, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.19,
    "atomic-weight": 30.973761998,
    "melting-point": "-",
    "boiling-point": "-"
  },
  "s":
  {
    "symbol": "S",
    "name": "Sulfur",
    "group": "other-nonmetal",
    "atomic-number": 16,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 4, "d": 0, "f": 0 }
    ],
    "electronegativity": "2.58",
    "atomic-weight": 32.06,
    "melting-point": "388.36",
    "boiling-point": "717.8"
  },
  "cl":
  {
    "symbol": "Cl",
    "name": "Chlorine",
    "group": "halogen",
    "atomic-number": 17,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 5, "d": 0, "f": 0 }
    ],
    "electronegativity": 3.16,
    "atomic-weight": 35.45,
    "melting-point": 171.6,
    "boiling-point": 239.11
  },
  "ar":
  {
    "symbol": "Ar",
    "name": "Argon",
    "group": "noble-gas",
    "atomic-number": 18,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 }
    ],
    "electronegativity": "no data",
    "atomic-weight": 39.948,
    "melting-point": 83.81,
    "boiling-point": 87.302
  },


  "k":
  {
    "symbol": "K",
    "name": "Potassium",
    "group": "alkali-metal",
    "atomic-number": 19,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 0.82,
    "atomic-weight": 39.0983,
    "melting-point": 336.7,
    "boiling-point": 1032
  },
  "ca":
  {
    "symbol": "Ca",
    "name": "Calcium",
    "group": "alkaline-earth-metal",
    "atomic-number": 20,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.00,
    "atomic-weight": 40.078,
    "melting-point": 1115,
    "boiling-point": 1757
  },
  "sc":
  {
    "symbol": "Sc",
    "name": "Scandium",
    "group": "transition-metal",
    "atomic-number": 21,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 1, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.36,
    "atomic-weight": 44.955908,
    "melting-point": 1814,
    "boiling-point": 3109
  },
  "ti":
  {
    "symbol": "Ti",
    "name": "Titanium",
    "group": "transition-metal",
    "atomic-number": 22,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 2, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.54,
    "atomic-weight": 47.867,
    "melting-point": 1941,
    "boiling-point": 3560
  },
  "v":
  {
    "symbol": "V",
    "name": "Vanadium",
    "group": "transition-metal",
    "atomic-number": 23,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 3, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.63,
    "atomic-weight": 50.9415,
    "melting-point": 2183,
    "boiling-point": 3680
  },
  "cr":
  {
    "symbol": "Cr",
    "name": "Chromium",
    "group": "transition-metal",
    "atomic-number": 24,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 5, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.66,
    "atomic-weight": 51.9961,
    "melting-point": 2180,
    "boiling-point": 2944
  },
  "mn":
  {
    "symbol": "Mn",
    "name": "Manganese",
    "group": "transition-metal",
    "atomic-number": 25,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 5, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.55,
    "atomic-weight": 54.938044,
    "melting-point": 1519,
    "boiling-point": 2334
  },
  "fe":
  {
    "symbol": "Fe",
    "name": "Iron",
    "group": "transition-metal",
    "atomic-number": 26,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 6, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.83,
    "atomic-weight": 55.845,
    "melting-point": 1811,
    "boiling-point": 3134
  },
  "co":
  {
    "symbol": "Co",
    "name": "Cobalt",
    "group": "transition-metal",
    "atomic-number": 27,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 7, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.88,
    "atomic-weight": 58.933194,
    "melting-point": 1768,
    "boiling-point": 3200
  },
  "ni":
  {
    "symbol": "Ni",
    "name": "Nickel",
    "group": "transition-metal",
    "atomic-number": 28,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 8, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.91,
    "atomic-weight": 58.6934,
    "melting-point": 1728,
    "boiling-point": 3003
  },
  "cu":
  {
    "symbol": "Cu",
    "name": "Copper",
    "group": "transition-metal",
    "atomic-number": 29,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.90,
    "atomic-weight": 63.546,
    "melting-point": 1357.77,
    "boiling-point": 2835
  },
  "zn":
  {
    "symbol": "Zn",
    "name": "Zinc",
    "group": "transition-metal",
    "atomic-number": 30,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.65,
    "atomic-weight": 65.38,
    "melting-point": 692.68,
    "boiling-point": 1180
  },
  "ga":
  {
    "symbol": "Ga",
    "name": "Gallium",
    "group": "post-transition-metal",
    "atomic-number": 31,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 1, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.81,
    "atomic-weight": 69.723,
    "melting-point": 302.9146,
    "boiling-point": 2673
  },
  "ge":
  {
    "symbol": "Ge",
    "name": "Germanium",
    "group": "metalloid",
    "atomic-number": 32,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 2, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.01,
    "atomic-weight": 72.630,
    "melting-point": 1211.40,
    "boiling-point": 3106
  },
  "as":
  {
    "symbol": "As",
    "name": "Arsenic",
    "group": "metalloid",
    "atomic-number": 33,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 3, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.18,
    "atomic-weight": 74.921595,
    "melting-point": "-",
    "boiling-point": "-"
  },
  "se":
  {
    "symbol": "Se",
    "name": "Selenium",
    "group": "other-nonmetal",
    "atomic-number": 34,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 4, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.55,
    "atomic-weight": 78.971,
    "melting-point": 494,
    "boiling-point": 958
  },
  "br":
  {
    "symbol": "Br",
    "name": "Bromine",
    "group": "halogen",
    "atomic-number": 35,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 5, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.96,
    "atomic-weight": 79.904,
    "melting-point": 265.8,
    "boiling-point": 332.0
  },
  "kr":
  {
    "symbol": "Kr",
    "name": "Krypton",
    "group": "noble-gas",
    "atomic-number": 36,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 }
    ],
    "electronegativity": 3.00,
    "atomic-weight": 83.798,
    "melting-point": 115.78,
    "boiling-point": 119.93
  },


  "rb":
  {
    "symbol": "Rb",
    "name": "Rubidium",
    "group": "alkali-metal",
    "atomic-number": 37,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 0.82,
    "atomic-weight": 85.4678,
    "melting-point": 312.45,
    "boiling-point": 961
  },
  "sr":
  {
    "symbol": "Sr",
    "name": "Strontium",
    "group": "alkaline-earth-metal",
    "atomic-number": 38,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 0.95,
    "atomic-weight": 87.62,
    "melting-point": 1050,
    "boiling-point": 1650
  },
  "y":
  {
    "symbol": "Y",
    "name": "Yttrium",
    "group": "transition-metal",
    "atomic-number": 39,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 1, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.22,
    "atomic-weight": 88.90584,
    "melting-point": 1799,
    "boiling-point": 3203
  },
  "zr":
  {
    "symbol": "Zr",
    "name": "Zirconium",
    "group": "transition-metal",
    "atomic-number": 40,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 2, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.33,
    "atomic-weight": 91.224,
    "melting-point": 2128,
    "boiling-point": 4650
  },
  "nb":
  {
    "symbol": "Nb",
    "name": "Niobium",
    "group": "transition-metal",
    "atomic-number": 41,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 4, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.60,
    "atomic-weight": 92.90637,
    "melting-point": 2750,
    "boiling-point": 5017
  },
  "mo":
  {
    "symbol": "Mo",
    "name": "Molybdenum",
    "group": "transition-metal",
    "atomic-number": 42,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 5, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.16,
    "atomic-weight": 95.95,
    "melting-point": 2896,
    "boiling-point": 4912
  },
  "tc":
  {
    "symbol": "Tc",
    "name": "Technetium",
    "group": "transition-metal",
    "atomic-number": 43,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 5, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.90,
    "atomic-weight": "?",
    "melting-point": 2430,
    "boiling-point": 4538
  },
  "ru":
  {
    "symbol": "Ru",
    "name": "Ruthenium",
    "group": "transition-metal",
    "atomic-number": 44,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 7, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.2,
    "atomic-weight": 101.07,
    "melting-point": 2607,
    "boiling-point": 4423
  },

  "rh":
  {
    "symbol": "Rh",
    "name": "Rhodium",
    "group": "transition-metal",
    "atomic-number": 45,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 8, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.28,
    "atomic-weight": 102.90550,
    "melting-point": 2237,
    "boiling-point": 3968
  },
  "pd":
  {
    "symbol": "Pd",
    "name": "Palladium",
    "group": "transition-metal",
    "atomic-number": 46,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 0, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.20,
    "atomic-weight": 106.42,
    "melting-point": 1828.05,
    "boiling-point": 3236
  },
  "ag":
  {
    "symbol": "Ag",
    "name": "Silver",
    "group": "transition-metal",
    "atomic-number": 47,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.93,
    "atomic-weight": 107.8682,
    "melting-point": 1234.93,
    "boiling-point": 2435
  },
  "cd":
  {
    "symbol": "Cd",
    "name": "Cadmium",
    "group": "transition-metal",
    "atomic-number": 48,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.69,
    "atomic-weight": 112.414,
    "melting-point": 594.22,
    "boiling-point": 1040
  },
  "in":
  {
    "symbol": "In",
    "name": "Indium",
    "group": "post-transition-metal",
    "atomic-number": 49,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 1, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.78,
    "atomic-weight": 114.818,
    "melting-point": 429.7485,
    "boiling-point": 2345
  },
  "sn":
  {
    "symbol": "Sn",
    "name": "Tin",
    "group": "post-transition-metal",
    "atomic-number": 50,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 2, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.96,
    "atomic-weight": 118.710,
    "melting-point": 505.08,
    "boiling-point": 2875
  },
  "sb":
  {
    "symbol": "Sb",
    "name": "Antimony",
    "group": "metalloid",
    "atomic-number": 51,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 3, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.05,
    "atomic-weight": 121.760,
    "melting-point": 903.78,
    "boiling-point": 1908
  },
  "te":
  {
    "symbol": "Te",
    "name": "Tellurium",
    "group": "metalloid",
    "atomic-number": 52,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 4, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.1,
    "atomic-weight": 127.60,
    "melting-point": 722.66,
    "boiling-point": 1261
  },
  "i":
  {
    "symbol": "I",
    "name": "Iodine",
    "group": "halogen",
    "atomic-number": 53,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 5, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.66,
    "atomic-weight": 126.90447,
    "melting-point": 386.85,
    "boiling-point": 457.4
  },
  "xe":
  {
    "symbol": "Xe",
    "name": "Xenon",
    "group": "noble-gas",
    "atomic-number": 54,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.6,
    "atomic-weight": 131.293,
    "melting-point": 161.40,
    "boiling-point": 165.051
  },

  "cs":
  {
    "symbol": "Cs",
    "name": "Caesium",
    "group": "alkali-metal",
    "atomic-number": 55,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 0.79,
    "atomic-weight": 132.90545196,
    "melting-point": 301.7,
    "boiling-point": 944
  },
  "ba":
  {
    "symbol": "Ba",
    "name": "Barium",
    "group": "alkaline-earth-metal",
    "atomic-number": 56,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": "?",
    "atomic-weight": 137.327,
    "melting-point": 1000,
    "boiling-point": 2118
  },
  "hf":
  {
    "symbol": "Hf",
    "name": "Hafnium",
    "group": "transition-metal",
    "atomic-number": 72,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 2, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.3,
    "atomic-weight": 178.49,
    "melting-point": 2506,
    "boiling-point": 4876
  },
  "ta":
  {
    "symbol": "Ta",
    "name": "Tantalium",
    "group": "transition-metal",
    "atomic-number": 73,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 3, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.5,
    "atomic-weight": 180.94788,
    "melting-point": 3290,
    "boiling-point": 5731
  },
  "w":
  {
    "symbol": "W",
    "name": "Tungsten",
    "group": "transition-metal",
    "atomic-number": 74,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 4, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.36,
    "atomic-weight": 183.84,
    "melting-point": 3695,
    "boiling-point": 6203
  },
  "re":
  {
    "symbol": "Re",
    "name": "Rhenium",
    "group": "transition-metal",
    "atomic-number": 75,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 5, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.9,
    "atomic-weight": 186.207,
    "melting-point": 3459,
    "boiling-point": 5903
  },
  "os":
  {
    "symbol": "Os",
    "name": "Osmium",
    "group": "transition-metal",
    "atomic-number": 76,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 6, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.2,
    "atomic-weight": 190.23,
    "melting-point": 3306,
    "boiling-point": 5285
  },
  "ir":
  {
    "symbol": "Ir",
    "name": "Iridium",
    "group": "transition-metal",
    "atomic-number": 77,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 7, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.20,
    "atomic-weight": 192.217,
    "melting-point": 2719,
    "boiling-point": 4403
  },
  "pt":
  {
    "symbol": "Pt",
    "name": "Platinum",
    "group": "transition-metal",
    "atomic-number": 78,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 9, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.28,
    "atomic-weight": 195.084,
    "melting-point": 2041.4,
    "boiling-point": 4098
  },
  "au":
  {
    "symbol": "Au",
    "name": "Gold",
    "group": "transition-metal",
    "atomic-number": 79,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.54,
    "atomic-weight": 196.966569,
    "melting-point": 1337.33,
    "boiling-point": 3243
  },
  "hg":
  {
    "symbol": "Hg",
    "name": "Mercury",
    "group": "transition-metal",
    "atomic-number": 80,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.00,
    "atomic-weight": 200.592,
    "melting-point": 234.3210,
    "boiling-point": 629.88
  },
  "tl":
  {
    "symbol": "Tl",
    "name": "Thallium",
    "group": "post-transition-metal",
    "atomic-number": 81,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 1, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.62,
    "atomic-weight": 204.38,
    "melting-point": 577,
    "boiling-point": 1746
  },
  "pb":
  {
    "symbol": "Pb",
    "name": "Lead",
    "group": "post-transition-metal",
    "atomic-number": 82,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 2, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.87,
    "atomic-weight": 207.2,
    "melting-point": 600.61,
    "boiling-point": 2022
  },
  "bi":
  {
    "symbol": "Bi",
    "name": "Bismuth",
    "group": "post-transition-metal",
    "atomic-number": 83,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 3, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.02,
    "atomic-weight": 208.98040,
    "melting-point": 544.7,
    "boiling-point": 1837
  },
  "po":
  {
    "symbol": "Po",
    "name": "Polonium",
    "group": "metalloid",
    "atomic-number": 84,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 4, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.0,
    "atomic-weight": 209,
    "melting-point": 527,
    "boiling-point": 1235
  },
  "at":
  {
    "symbol": "At",
    "name": "Astatine",
    "group": "halogen",
    "atomic-number": 85,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 5, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.2,
    "atomic-weight": 210,
    "melting-point": 575,
    "boiling-point": 610
  },
  "rn":
  {
    "symbol": "Rn",
    "name": "Radon",
    "group": "noble-gas",
    "atomic-number": 86,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 }
    ],
    "electronegativity": 2.2,
    "atomic-weight": 222,
    "melting-point": 202,
    "boiling-point": 211.5
  },

  "fr":
  {
    "symbol": "Fr",
    "name": "Francium",
    "group": "alkali-metal",
    "atomic-number": 87,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 1, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": "> 0.79",
    "atomic-weight": 223,
    "melting-point": "300 (?)",
    "boiling-point": "950 (?)"
  },
  "ra":
  {
    "symbol": "Ra",
    "name": "Radium",
    "group": "alkaline-earth-metal",
    "atomic-number": 88,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 0.9,
    "atomic-weight": 226,
    "melting-point": 973,
    "boiling-point": 2010
  },

/*
  "rf":
  {
    "symbol": "Rf",
    "name": "Rutherfordium",
    "group": "transition-metal",
    "atomic-number": 104,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "db":
  {
    "symbol": "Db",
    "name": "Dubnium",
    "group": "transition-metal",
    "atomic-number": 105,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "sg":
  {
    "symbol": "Sg",
    "name": "Seaborgium",
    "group": "transition-metal",
    "atomic-number": 106,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "bh":
  {
    "symbol": "Bh",
    "name": "Bohrium",
    "group": "transition-metal",
    "atomic-number": 107,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "hs":
  {
    "symbol": "Hs",
    "name": "Hassium",
    "group": "transition-metal",
    "atomic-number": 108,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "mt":
  {
    "symbol": "Mt",
    "name": "Meitnerium",
    "group": "transition-metal",
    "atomic-number": 109,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "ds":
  {
    "symbol": "Ds",
    "name": "Darmstadtium",
    "group": "transition-metal",
    "atomic-number": 110,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "rg":
  {
    "symbol": "Rg",
    "name": "Roentgenium",
    "group": "transition-metal",
    "atomic-number": 111,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "cn":
  {
    "symbol": "Cn",
    "name": "Copernium",
    "group": "transition-metal",
    "atomic-number": 112,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "nh":
  {
    "symbol": "Nh",
    "name": "Nihonium",
    "group": "post-transition-metal",
    "atomic-number": 113,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "fl":
  {
    "symbol": "Fl",
    "name": "Flerovium",
    "group": "post-transition-metal",
    "atomic-number": 114,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "mc":
  {
    "symbol": "Mc",
    "name": "Moscovium",
    "group": "post-transition-metal",
    "atomic-number": 115,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "lv":
  {
    "symbol": "Lv",
    "name": "Livermorium",
    "group": "post-transition-metal",
    "atomic-number": 116,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "ts":
  {
    "symbol": "Ts",
    "name": "Tennessine",
    "group": "halogen",
    "atomic-number": 117,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
  "og":
  {
    "symbol": "Og",
    "name": "Oganesson",
    "group": "noble-gas",
    "atomic-number": 118,
    "electron-configuration": "2",
    "electronegativity": "?",
    "atomic-weight": 4.0026,
    "melting-point": "?",
    "boiling-point": "?"
  },
*/

  "la":
  {
    "symbol": "La",
    "name": "Lanthanum",
    "group": "lanthanide",
    "atomic-number": 57,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 1, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.10,
    "atomic-weight": 138.90547,
    "melting-point": 1193,
    "boiling-point": 3737
  },
  "ce":
  {
    "symbol": "Ce",
    "name": "Cerium",
    "group": "lanthanide",
    "atomic-number": 58,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 1 },
      { "s": 2, "p": 6, "d": 1, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.12,
    "atomic-weight": 140.116,
    "melting-point": 1068,
    "boiling-point": 3716
  },
  "pr":
  {
    "symbol": "Pr",
    "name": "Praseodymium",
    "group": "lanthanide",
    "atomic-number": 59,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 3 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.13,
    "atomic-weight": 140.90766,
    "melting-point": 1208,
    "boiling-point": 3403
  },
  "nd":
  {
    "symbol": "Nd",
    "name": "Neodymium",
    "group": "lanthanide",
    "atomic-number": 60,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 4 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.14,
    "atomic-weight": 144.242,
    "melting-point": 1297,
    "boiling-point": 3347
  },
  "pm":
  {
    "symbol": "Pm",
    "name": "Promethium",
    "group": "lanthanide",
    "atomic-number": 61,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 5 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": "1.13 (?)",
    "atomic-weight": 145,
    "melting-point": 1315,
    "boiling-point": 3273
  },
  "sm":
  {
    "symbol": "Sm",
    "name": "Samarium",
    "group": "lanthanide",
    "atomic-number": 62,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 6 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.17,
    "atomic-weight": 150.36,
    "melting-point": 1345,
    "boiling-point": 2173
  },
  "eu":
  {
    "symbol": "Eu",
    "name": "Europium",
    "group": "lanthanide",
    "atomic-number": 63,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 7 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.2,
    "atomic-weight": 151.964,
    "melting-point": 1099,
    "boiling-point": 1802
  },
  "gd":
  {
    "symbol": "Gd",
    "name": "Gadolinium",
    "group": "lanthanide",
    "atomic-number": 64,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 7 },
      { "s": 2, "p": 6, "d": 1, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.20,
    "atomic-weight": 157.25,
    "melting-point": 1585,
    "boiling-point": 3273
  },
  "tb":
  {
    "symbol": "Tb",
    "name": "Terbium",
    "group": "lanthanide",
    "atomic-number": 65,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 9 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": "1.2 (?)",
    "atomic-weight": 158.92535,
    "melting-point": 1629,
    "boiling-point": 3396
  },
  "dy":
  {
    "symbol": "Dy",
    "name": "Dysprosium",
    "group": "lanthanide",
    "atomic-number": 66,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 10 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.22,
    "atomic-weight": 162.500,
    "melting-point": 1680,
    "boiling-point": 2840
  },
  "ho":
  {
    "symbol": "Ho",
    "name": "Holmium",
    "group": "lanthanide",
    "atomic-number": 67,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 11 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.23,
    "atomic-weight": 164.93033,
    "melting-point": 1734,
    "boiling-point": 2873
  },
  "er":
  {
    "symbol": "Er",
    "name": "Erbium",
    "group": "lanthanide",
    "atomic-number": 68,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 12 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.24,
    "atomic-weight": 167.259,
    "melting-point": 1802,
    "boiling-point": 3141
  },
  "tm":
  {
    "symbol": "Tm",
    "name": "Thulium",
    "group": "lanthanide",
    "atomic-number": 69,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 13 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.25,
    "atomic-weight": 168.93422,
    "melting-point": 1818,
    "boiling-point": 2223
  },
  "yb":
  {
    "symbol": "Yb",
    "name": "Ytterbium",
    "group": "lanthanide",
    "atomic-number": 70,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": "1.1 (?)",
    "atomic-weight": 173.045,
    "melting-point": 1097,
    "boiling-point": 1469
  },
  "lu":
  {
    "symbol": "Lu",
    "name": "Lutetium",
    "group": "lanthanide",
    "atomic-number": 71,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 1, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.27,
    "atomic-weight": 174.9668,
    "melting-point": 1925,
    "boiling-point": 3675
  },


  "ac":
  {
    "symbol": "Ac",
    "name": "Actinium",
    "group": "actinide",
    "atomic-number": 89,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 1, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.1,
    "atomic-weight": 227,
    "melting-point": 1500,
    "boiling-point": 3500
  },
  "th":
  {
    "symbol": "Th",
    "name": "Thorium",
    "group": "actinide",
    "atomic-number": 90,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 2, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.3,
    "atomic-weight": 232.0377,
    "melting-point": 2023,
    "boiling-point": 5061
  },
  "pa":
  {
    "symbol": "Pa",
    "name": "Protactinium",
    "group": "actinide",
    "atomic-number": 91,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 2 },
      { "s": 2, "p": 6, "d": 1, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.5,
    "atomic-weight": 231.03588,
    "melting-point": 1841,
    "boiling-point": 4300
  },
  "u":
  {
    "symbol": "U",
    "name": "Uranium",
    "group": "actinide",
    "atomic-number": 92,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 3 },
      { "s": 2, "p": 6, "d": 1, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.38,
    "atomic-weight": 238.02891,
    "melting-point": 1405.3,
    "boiling-point": 4404
  },
  "np":
  {
    "symbol": "Np",
    "name": "Neptunium",
    "group": "actinide",
    "atomic-number": 93,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 4 },
      { "s": 2, "p": 6, "d": 1, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.36,
    "atomic-weight": 237,
    "melting-point": 912,
    "boiling-point": 4447
  },
  "pu":
  {
    "symbol": "Pu",
    "name": "Plutonium",
    "group": "actinide",
    "atomic-number": 94,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 6 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.28,
    "atomic-weight": 244,
    "melting-point": 912.5,
    "boiling-point": 3505
  },
  "am":
  {
    "symbol": "Am",
    "name": "Americum",
    "group": "actinide",
    "atomic-number": 95,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 7 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.3,
    "atomic-weight": 243,
    "melting-point": 1449,
    "boiling-point": 2880
  },
  "cm":
  {
    "symbol": "Cm",
    "name": "Curium",
    "group": "actinide",
    "atomic-number": 96,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 7 },
      { "s": 2, "p": 6, "d": 1, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": "1.3",
    "atomic-weight": 247,
    "melting-point": "1613",
    "boiling-point": "3383"
  },
  "bk":
  {
    "symbol": "Bk",
    "name": "Berkelium",
    "group": "actinide",
    "atomic-number": 97,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 9 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.3,
    "atomic-weight": 247,
    "melting-point": 1259,
    "boiling-point": 2900
  },
  "cf":
  {
    "symbol": "Cf",
    "name": "Californium",
    "group": "actinide",
    "atomic-number": 98,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 10 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.3,
    "atomic-weight": 251,
    "melting-point": 1173,
    "boiling-point": 1743
  },
  "es":
  {
    "symbol": "Es",
    "name": "Einsteinium",
    "group": "actinide",
    "atomic-number": 99,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 11 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.3,
    "atomic-weight": 252,
    "melting-point": 1133,
    "boiling-point": 1269
  },
  "fm":
  {
    "symbol": "Fm",
    "name": "Fermium",
    "group": "actinide",
    "atomic-number": 100,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 12 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.3,
    "atomic-weight": 257,
    "melting-point": 1800,
    "boiling-point": "-"
  },
  "md":
  {
    "symbol": "Md",
    "name": "Mendelevium",
    "group": "actinide",
    "atomic-number": 101,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 13 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.3,
    "atomic-weight": 258,
    "melting-point": 1100,
    "boiling-point": "-"
  },
  "no":
  {
    "symbol": "No",
    "name": "Nobelium",
    "group": "actinide",
    "atomic-number": 102,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 0, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.3,
    "atomic-weight": 259,
    "melting-point": 1100,
    "boiling-point": "-"
  },
  "lr":
  {
    "symbol": "Lr",
    "name": "Lawrencium",
    "group": "actinide",
    "atomic-number": 103,
    "electron-configuration": [
      { "s": 2, "p": 0, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 0 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 10, "f": 14 },
      { "s": 2, "p": 6, "d": 0, "f": 0 },
      { "s": 2, "p": 1, "d": 0, "f": 0 }
    ],
    "electronegativity": 1.3,
    "atomic-weight": 266,
    "melting-point": 1900,
    "boiling-point": "-"
  }
}