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data.js
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module.exports = {
elements: [
{
"atomicNumber": 1,
"symbol": "H",
"name": "Hydrogen",
"atomicMass": "1.0080 u",
"electronConfiguration": "1s1",
"electronegativity": "2.2",
"atomicRadius": "120 pm",
"ionizationEnergy": "13.598 eV",
"electronAffinity": "0.754 eV",
"oxidationStates": "+1, -1",
"standardState": "Gas",
"meltingPoint": "13.81 K",
"boilingPoint": "20.28 K",
"density": "0.00008988 g/cm³",
"family": "Nonmetal",
"yearDiscovered": "1766",
"numberOfNeutrons": 0,
"numberOfProtons": 1,
"numberOfElectrons": 1,
"numberOfValence": 1,
"valency": 1,
"group": 1,
"period": 1,
"shell": "s-shell",
"specificHeat": "14.304 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 2,
"symbol": "He",
"name": "Helium",
"atomicMass": "4.00260 u",
"electronConfiguration": "1s2",
"atomicRadius": "140 pm",
"ionizationEnergy": "24.587 eV",
"oxidationStates": "0",
"standardState": "Gas",
"meltingPoint": "0.95 K",
"boilingPoint": "4.22 K",
"density": "0.0001785 g/cm³",
"family": "Noble gas",
"yearDiscovered": "1868",
"numberOfNeutrons": 2,
"numberOfProtons": 2,
"numberOfElectrons": 2,
"numberOfValence": 2,
"valency": 0,
"group": 18,
"period": 1,
"shell": "s-shell",
"specificHeat": "5.193 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 3,
"symbol": "Li",
"name": "Lithium",
"atomicMass": "7.0 u",
"electronConfiguration": "[He]2s1",
"electronegativity": "0.98",
"atomicRadius": "182 pm",
"ionizationEnergy": "5.392 eV",
"electronAffinity": "0.618 eV",
"oxidationStates": "+1",
"standardState": "Solid",
"meltingPoint": "453.65 K",
"boilingPoint": "1615 K",
"density": "0.534 g/cm³",
"family": "Alkali metal",
"yearDiscovered": "1817",
"numberOfNeutrons": 4,
"numberOfProtons": 3,
"numberOfElectrons": 3,
"numberOfValence": 1,
"valency": 1,
"group": 1,
"period": 2,
"shell": "s-shell",
"specificHeat": "3.582 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 4,
"symbol": "Be",
"name": "Beryllium",
"atomicMass": "9.012183 u",
"electronConfiguration": "[He]2s2",
"electronegativity": "1.57",
"atomicRadius": "153 pm",
"ionizationEnergy": "9.323 eV",
"oxidationStates": "+2",
"standardState": "Solid",
"meltingPoint": "1560 K",
"boilingPoint": "2744 K",
"density": "1.85 g/cm³",
"family": "Alkaline earth metal",
"yearDiscovered": "1798",
"numberOfNeutrons": 5,
"numberOfProtons": 4,
"numberOfElectrons": 4,
"numberOfValence": 2,
"valency": 2,
"group": 2,
"period": 2,
"shell": "s-shell",
"specificHeat": "1.825 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 5,
"symbol": "B",
"name": "Boron",
"atomicMass": "10.81 u",
"electronConfiguration": "[He]2s2 2p1",
"electronegativity": "2.04",
"atomicRadius": "192 pm",
"ionizationEnergy": "8.298 eV",
"electronAffinity": "0.277 eV",
"oxidationStates": "+3",
"standardState": "Solid",
"meltingPoint": "2348 K",
"boilingPoint": "4273 K",
"density": "2.37 g/cm³",
"family": "Metalloid",
"yearDiscovered": "1808",
"numberOfNeutrons": 6,
"numberOfProtons": 5,
"numberOfElectrons": 5,
"numberOfValence": 3,
"valency": 3,
"group": 13,
"period": 2,
"shell": "p-shell",
"specificHeat": "1.026 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 6,
"symbol": "C",
"name": "Carbon",
"atomicMass": "12.011 u",
"electronConfiguration": "[He]2s2 2p2",
"electronegativity": "2.55",
"atomicRadius": "170 pm",
"ionizationEnergy": "11.260 eV",
"electronAffinity": "1.263 eV",
"oxidationStates": "+4, +2, -4",
"standardState": "Solid",
"meltingPoint": "3823 K",
"boilingPoint": "4098 K",
"density": "2.2670 g/cm³",
"family": "Nonmetal",
"yearDiscovered": "Ancient",
"numberOfNeutrons": 6,
"numberOfProtons": 6,
"numberOfElectrons": 6,
"numberOfValence": 4,
"valency": 4,
"group": 14,
"period": 2,
"shell": "p-shell",
"specificHeat": "0.709 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 7,
"symbol": "N",
"name": "Nitrogen",
"atomicMass": "14.007 u",
"electronConfiguration": "[He] 2s2 2p3",
"electronegativity": "3.04",
"atomicRadius": "155 pm",
"ionizationEnergy": "14.534 eV",
"oxidationStates": "+5, +4, +3, +2, +1, -1, -2, -3",
"standardState": "Gas",
"meltingPoint": "63.15 K",
"boilingPoint": "77.36 K",
"density": "0.0012506 g/cm³",
"family": "Nonmetal",
"yearDiscovered": "1772",
"numberOfNeutrons": 7,
"numberOfProtons": 7,
"numberOfElectrons": 7,
"numberOfValence": 5,
"valency": 3,
"group": 15,
"period": 2,
"shell": "p-shell",
"specificHeat": "1.040 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 8,
"symbol": "O",
"name": "Oxygen",
"atomicMass": "15.999 u",
"electronConfiguration": "[He]2s2 2p4",
"electronegativity": "3.44",
"atomicRadius": "152 pm",
"ionizationEnergy": "13.618 eV",
"electronAffinity": "1.461 eV",
"oxidationStates": "-2",
"standardState": "Gas",
"meltingPoint": "54.36 K",
"boilingPoint": "90.2 K",
"density": "0.001429 g/cm³",
"family": "Nonmetal",
"yearDiscovered": "1774",
"numberOfNeutrons": 8,
"numberOfProtons": 8,
"numberOfElectrons": 8,
"numberOfValence": 6,
"valency": 2,
"group": 16,
"period": 2,
"shell": "p-shell",
"specificHeat": "0.918 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 9,
"symbol": "F",
"name": "Fluorine",
"atomicMass": "18.99840316 u",
"electronConfiguration": "[He]2s2 2p5",
"electronegativity": "3.98",
"atomicRadius": "135 pm",
"ionizationEnergy": "17.423 eV",
"electronAffinity": "3.339 eV",
"oxidationStates": "-1",
"standardState": "Gas",
"meltingPoint": "53.53 K",
"boilingPoint": "85.03 K",
"density": "0.001696 g/cm³",
"family": "Halogen",
"yearDiscovered": "1670",
"numberOfNeutrons": 10,
"numberOfProtons": 9,
"numberOfElectrons": 9,
"numberOfValence": 7,
"valency": 1,
"group": 17,
"period": 2,
"shell": "p-shell",
"specificHeat": "0.824 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 10,
"symbol": "Ne",
"name": "Neon",
"atomicMass": "20.180 u",
"electronConfiguration": "[He]2s2 2p6",
"atomicRadius": "154 pm",
"ionizationEnergy": "21.565 eV",
"oxidationStates": "0",
"standardState": "Gas",
"meltingPoint": "24.56 K",
"boilingPoint": "27.07 K",
"density": "0.0008999 g/cm³",
"family": "Noble gas",
"yearDiscovered": "1898",
"numberOfNeutrons": 10,
"numberOfProtons": 10,
"numberOfElectrons": 10,
"numberOfValence": 8,
"valency": 0,
"group": 18,
"period": 2,
"shell": "p-shell",
"specificHeat": "1.030 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 11,
"symbol": "Na",
"name": "Sodium",
"atomicMass": "22.9897693 u",
"electronConfiguration": "[Ne]3s1",
"electronegativity": "0.93",
"atomicRadius": "227 pm",
"ionizationEnergy": "5.139 eV",
"electronAffinity": "0.548 eV",
"oxidationStates": "+1",
"standardState": "Solid",
"meltingPoint": "370.95 K",
"boilingPoint": "1156 K",
"density": "0.97 g/cm³",
"family": "Alkali metal",
"yearDiscovered": "1807",
"numberOfNeutrons": 12,
"numberOfProtons": 11,
"numberOfElectrons": 11,
"numberOfValence": 1,
"valency": 1,
"group": 1,
"period": 3,
"shell": "s-shell",
"specificHeat": "1.228 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 12,
"symbol": "Mg",
"name": "Magnesium",
"atomicMass": "24.305 u",
"electronConfiguration": "[Ne]3s2",
"electronegativity": "1.31",
"atomicRadius": "173 pm",
"ionizationEnergy": "7.646 eV",
"oxidationStates": "+2",
"standardState": "Solid",
"meltingPoint": "923 K",
"boilingPoint": "1363 K",
"density": "1.74 g/cm³",
"family": "Alkaline earth metal",
"yearDiscovered": "1808",
"numberOfNeutrons": 12,
"numberOfProtons": 12,
"numberOfElectrons": 12,
"numberOfValence": 2,
"valency": 2,
"group": 2,
"period": 3,
"shell": "s-shell",
"specificHeat": "1.023 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 13,
"symbol": "Al",
"name": "Aluminum",
"atomicMass": "26.981538 u",
"electronConfiguration": "[Ne]3s2 3p1",
"electronegativity": "1.61",
"atomicRadius": "184 pm",
"ionizationEnergy": "5.986 eV",
"electronAffinity": "0.441 eV",
"oxidationStates": "+3",
"standardState": "Solid",
"meltingPoint": "933.437 K",
"boilingPoint": "2792 K",
"density": "2.70 g/cm³",
"family": "Post-transition metal",
"yearDiscovered": "Ancient",
"numberOfNeutrons": 14,
"numberOfProtons": 13,
"numberOfElectrons": 13,
"numberOfValence": 3,
"valency": 3,
"group": 13,
"period": 3,
"shell": "p-shell",
"specificHeat": "0.897 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 14,
"symbol": "Si",
"name": "Silicon",
"atomicMass": "28.085 u",
"electronConfiguration": "[Ne]3s2 3p2",
"electronegativity": "1.9",
"atomicRadius": "210 pm",
"ionizationEnergy": "8.152 eV",
"electronAffinity": "1.385 eV",
"oxidationStates": "+4, +2, -4",
"standardState": "Solid",
"meltingPoint": "1687 K",
"boilingPoint": "3538 K",
"density": "2.3296 g/cm³",
"family": "Metalloid",
"yearDiscovered": "1854",
"numberOfNeutrons": 14,
"numberOfProtons": 14,
"numberOfElectrons": 14,
"numberOfValence": 4,
"valency": 4,
"group": 14,
"period": 3,
"shell": "p-shell",
"specificHeat": "0.705 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 15,
"symbol": "P",
"name": "Phosphorus",
"atomicMass": "30.97376200 u",
"electronConfiguration": "[Ne]3s2 3p3",
"electronegativity": "2.19",
"atomicRadius": "180 pm",
"ionizationEnergy": "10.487 eV",
"electronAffinity": "0.746 eV",
"oxidationStates": "+5, +3, -3",
"standardState": "Solid",
"meltingPoint": "317.3 K",
"boilingPoint": "553.65 K",
"density": "1.82 g/cm³",
"family": "Nonmetal",
"yearDiscovered": "1669",
"numberOfNeutrons": 16,
"numberOfProtons": 15,
"numberOfElectrons": 15,
"numberOfValence": 5,
"valency": 3,
"group": 15,
"period": 3,
"shell": "p-shell",
"specificHeat": "0.769 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 16,
"symbol": "S",
"name": "Sulfur",
"atomicMass": "32.07 u",
"electronConfiguration": "[Ne]3s2 3p4",
"electronegativity": "2.58",
"atomicRadius": "180 pm",
"ionizationEnergy": "10.360 eV",
"electronAffinity": "2.077 eV",
"oxidationStates": "+6, +4, -2",
"standardState": "Solid",
"meltingPoint": "388.36 K",
"boilingPoint": "717.75 K",
"density": "2.067 g/cm³",
"family": "Nonmetal",
"yearDiscovered": "Ancient",
"numberOfNeutrons": 16,
"numberOfProtons": 16,
"numberOfElectrons": 16,
"numberOfValence": 6,
"valency": 2,
"group": 16,
"period": 3,
"shell": "p-shell",
"specificHeat": "0.710 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 17,
"symbol": "Cl",
"name": "Chlorine",
"atomicMass": "35.45 u",
"electronConfiguration": "[Ne]3s2 3p5",
"electronegativity": "3.16",
"atomicRadius": "175 pm",
"ionizationEnergy": "12.968 eV",
"electronAffinity": "3.617 eV",
"oxidationStates": "+7, +5, +1, -1",
"standardState": "Gas",
"meltingPoint": "171.65 K",
"boilingPoint": "239.11 K",
"density": "0.003214 g/cm³",
"family": "Halogen",
"yearDiscovered": "1774",
"numberOfNeutrons": 18,
"numberOfProtons": 17,
"numberOfElectrons": 17,
"numberOfValence": 7,
"valency": 1,
"group": 17,
"period": 3,
"shell": "p-shell",
"specificHeat": "0.479 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 18,
"symbol": "Ar",
"name": "Argon",
"atomicMass": "39.9 u",
"electronConfiguration": "[Ne]3s2 3p6",
"atomicRadius": "188 pm",
"ionizationEnergy": "15.760 eV",
"oxidationStates": "0",
"standardState": "Gas",
"meltingPoint": "83.8 K",
"boilingPoint": "87.3 K",
"density": "0.0017837 g/cm³",
"family": "Noble gas",
"yearDiscovered": "1894",
"numberOfNeutrons": 22,
"numberOfProtons": 18,
"numberOfElectrons": 18,
"numberOfValence": 8,
"valency": 0,
"group": 18,
"period": 3,
"shell": "p-shell",
"specificHeat": "0.520 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 19,
"symbol": "K",
"name": "Potassium",
"atomicMass": "39.0983 u",
"electronConfiguration": "[Ar]4s1",
"electronegativity": "0.82",
"atomicRadius": "275 pm",
"ionizationEnergy": "4.341 eV",
"electronAffinity": "0.501 eV",
"oxidationStates": "+1",
"standardState": "Solid",
"meltingPoint": "336.53 K",
"boilingPoint": "1032 K",
"density": "0.89 g/cm³",
"family": "Alkali metal",
"yearDiscovered": "1807",
"numberOfNeutrons": 20,
"numberOfProtons": 19,
"numberOfElectrons": 19,
"numberOfValence": 1,
"valency": 1,
"group": 1,
"period": 4,
"shell": "s-shell",
"specificHeat": "0.757 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 20,
"symbol": "Ca",
"name": "Calcium",
"atomicMass": "40.08 u",
"electronConfiguration": "[Ar]4s2",
"electronegativity": "1",
"atomicRadius": "231 pm",
"ionizationEnergy": "6.113 eV",
"oxidationStates": "+2",
"standardState": "Solid",
"meltingPoint": "1115 K",
"boilingPoint": "1757 K",
"density": "1.54 g/cm³",
"family": "Alkaline earth metal",
"yearDiscovered": "Ancient",
"numberOfNeutrons": 20,
"numberOfProtons": 20,
"numberOfElectrons": 20,
"numberOfValence": 2,
"valency": 2,
"group": 2,
"period": 4,
"shell": "s-shell",
"specificHeat": "0.647 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 21,
"symbol": "Sc",
"name": "Scandium",
"atomicMass": "44.95591 u",
"electronConfiguration": "[Ar]4s2 3d1",
"electronegativity": "1.36",
"atomicRadius": "211 pm",
"ionizationEnergy": "6.561 eV",
"electronAffinity": "0.188 eV",
"oxidationStates": "+3",
"standardState": "Solid",
"meltingPoint": "1814 K",
"boilingPoint": "3109 K",
"density": "2.99 g/cm³",
"family": "Transition metal",
"yearDiscovered": "1879",
"numberOfNeutrons": 24,
"numberOfProtons": 21,
"numberOfElectrons": 21,
"group": 3,
"period": 4,
"shell": "d-shell",
"specificHeat": "0.568 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 22,
"symbol": "Ti",
"name": "Titanium",
"atomicMass": "47.867 u",
"electronConfiguration": "[Ar]4s2 3d2",
"electronegativity": "1.54",
"atomicRadius": "187 pm",
"ionizationEnergy": "6.828 eV",
"electronAffinity": "0.079 eV",
"oxidationStates": "+4, +3, +2",
"standardState": "Solid",
"meltingPoint": "1941 K",
"boilingPoint": "3560 K",
"density": "4.5 g/cm³",
"family": "Transition metal",
"yearDiscovered": "1791",
"numberOfNeutrons": 26,
"numberOfProtons": 22,
"numberOfElectrons": 22,
"group": 4,
"period": 4,
"shell": "d-shell",
"specificHeat": "0.523 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 23,
"symbol": "V",
"name": "Vanadium",
"atomicMass": "50.9415 u",
"electronConfiguration": "[Ar]4s2 3d3",
"electronegativity": "1.63",
"atomicRadius": "179 pm",
"ionizationEnergy": "6.746 eV",
"electronAffinity": "0.525 eV",
"oxidationStates": "+5, +4, +3, +2",
"standardState": "Solid",
"meltingPoint": "2183 K",
"boilingPoint": "3680 K",
"density": "6.0 g/cm³",
"family": "Transition metal",
"yearDiscovered": "1801",
"numberOfNeutrons": 28,
"numberOfProtons": 23,
"numberOfElectrons": 23,
"group": 5,
"period": 4,
"shell": "d-shell",
"specificHeat": "0.489 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 24,
"symbol": "Cr",
"name": "Chromium",
"atomicMass": "51.996 u",
"electronConfiguration": "[Ar]3d5 4s1",
"electronegativity": "1.66",
"atomicRadius": "189 pm",
"ionizationEnergy": "6.767 eV",
"electronAffinity": "0.666 eV",
"oxidationStates": "+6, +3, +2",
"standardState": "Solid",
"meltingPoint": "2180 K",
"boilingPoint": "2944 K",
"density": "7.15 g/cm³",
"family": "Transition metal",
"yearDiscovered": "1797",
"numberOfNeutrons": 28,
"numberOfProtons": 24,
"numberOfElectrons": 24,
"group": 6,
"period": 4,
"shell": "d-shell",
"specificHeat": "0.449 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 25,
"symbol": "Mn",
"name": "Manganese",
"atomicMass": "54.93804 u",
"electronConfiguration": "[Ar]4s2 3d5",
"electronegativity": "1.55",
"atomicRadius": "197 pm",
"ionizationEnergy": "7.434 eV",
"oxidationStates": "+7, +4, +3, +2",
"standardState": "Solid",
"meltingPoint": "1519 K",
"boilingPoint": "2334 K",
"density": "7.3 g/cm³",
"family": "Transition metal",
"yearDiscovered": "1774",
"numberOfNeutrons": 30,
"numberOfProtons": 25,
"numberOfElectrons": 25,
"group": 7,
"period": 4,
"shell": "d-shell",
"specificHeat": "0.479 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 26,
"symbol": "Fe",
"name": "Iron",
"atomicMass": "55.84 u",
"electronConfiguration": "[Ar]4s2 3d6",
"electronegativity": "1.83",
"atomicRadius": "194 pm",
"ionizationEnergy": "7.902 eV",
"electronAffinity": "0.163 eV",
"oxidationStates": "+3, +2",
"standardState": "Solid",
"meltingPoint": "1811 K",
"boilingPoint": "3134 K",
"density": "7.874 g/cm³",
"family": "Transition metal",
"yearDiscovered": "Ancient",
"numberOfNeutrons": 30,
"numberOfProtons": 26,
"numberOfElectrons": 26,
"group": 8,
"period": 4,
"shell": "d-shell",
"specificHeat": "0.449 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 27,
"symbol": "Co",
"name": "Cobalt",
"atomicMass": "58.93319 u",
"electronConfiguration": "[Ar]4s2 3d7",
"electronegativity": "1.88",
"atomicRadius": "192 pm",
"ionizationEnergy": "7.881 eV",
"electronAffinity": "0.661 eV",
"oxidationStates": "+3, +2",
"standardState": "Solid",
"meltingPoint": "1768 K",
"boilingPoint": "3200 K",
"density": "8.86 g/cm³",
"family": "Transition metal",
"yearDiscovered": "1735",
"numberOfNeutrons": 32,
"numberOfProtons": 27,
"numberOfElectrons": 27,
"group": 9,
"period": 4,
"shell": "d-shell",
"specificHeat": "0.421 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 28,
"symbol": "Ni",
"name": "Nickel",
"atomicMass": "58.693 u",
"electronConfiguration": "[Ar]4s2 3d8",
"electronegativity": "1.91",
"atomicRadius": "163 pm",
"ionizationEnergy": "7.640 eV",
"electronAffinity": "1.156 eV",
"oxidationStates": "+3, +2",
"standardState": "Solid",
"meltingPoint": "1728 K",
"boilingPoint": "3186 K",
"density": "8.912 g/cm³",
"family": "Transition metal",
"yearDiscovered": "1751",
"numberOfNeutrons": 31,
"numberOfProtons": 28,
"numberOfElectrons": 28,
"group": 10,
"period": 4,
"shell": "d-shell",
"specificHeat": "0.444 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 29,
"symbol": "Cu",
"name": "Copper",
"atomicMass": "63.55 u",
"electronConfiguration": "[Ar]4s1 3d10",
"electronegativity": "1.9",
"atomicRadius": "140 pm",
"ionizationEnergy": "7.726 eV",
"electronAffinity": "1.228 eV",
"oxidationStates": "+2, +1",
"standardState": "Solid",
"meltingPoint": "1357.77 K",
"boilingPoint": "2835 K",
"density": "8.933 g/cm³",
"family": "Transition metal",
"yearDiscovered": "Ancient",
"numberOfNeutrons": 35,
"numberOfProtons": 29,
"numberOfElectrons": 29,
"group": 11,
"period": 4,
"shell": "d-shell",
"specificHeat": "0.385 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 30,
"symbol": "Zn",
"name": "Zinc",
"atomicMass": "65.4 u",
"electronConfiguration": "[Ar]4s2 3d10",
"electronegativity": "1.65",
"atomicRadius": "139 pm",
"ionizationEnergy": "9.394 eV",
"oxidationStates": "+2",
"standardState": "Solid",
"meltingPoint": "692.68 K",
"boilingPoint": "1180 K",
"density": "7.134 g/cm³",
"family": "Transition metal",
"yearDiscovered": "1746",
"numberOfNeutrons": 35,
"numberOfProtons": 30,
"numberOfElectrons": 30,
"group": 12,
"period": 4,
"shell": "d-shell",
"specificHeat": "0.388 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 31,
"symbol": "Ga",
"name": "Gallium",
"atomicMass": "69.723 u",
"electronConfiguration": "[Ar]4s2 3d10 4p1",
"electronegativity": "1.81",
"atomicRadius": "187 pm",
"ionizationEnergy": "5.999 eV",
"electronAffinity": "0.3 eV",
"oxidationStates": "+3",
"standardState": "Solid",
"meltingPoint": "302.91 K",
"boilingPoint": "2477 K",
"density": "5.91 g/cm³",
"family": "Post-transition metal",
"yearDiscovered": "1875",
"numberOfNeutrons": 39,
"numberOfProtons": 31,
"numberOfElectrons": 31,
"numberOfValence": 3,
"valency": 3,
"group": 13,
"period": 4,
"shell": "p-shell",
"specificHeat": "0.371 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 32,
"symbol": "Ge",
"name": "Germanium",
"atomicMass": "72.63 u",
"electronConfiguration": "[Ar]4s2 3d10 4p2",
"electronegativity": "2.01",
"atomicRadius": "211 pm",
"ionizationEnergy": "7.900 eV",
"electronAffinity": "1.35 eV",
"oxidationStates": "+4, +2",
"standardState": "Solid",
"meltingPoint": "1211.4 K",
"boilingPoint": "3106 K",
"density": "5.323 g/cm³",
"family": "Metalloid",
"yearDiscovered": "1886",
"numberOfNeutrons": 41,
"numberOfProtons": 32,
"numberOfElectrons": 32,
"numberOfValence": 4,
"valency": 4,
"group": 14,
"period": 4,
"shell": "p-shell",
"specificHeat": "0.320 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 33,
"symbol": "As",
"name": "Arsenic",
"atomicMass": "74.92159 u",
"electronConfiguration": "[Ar]4s2 3d10 4p3",
"electronegativity": "2.18",
"atomicRadius": "185 pm",
"ionizationEnergy": "9.815 eV",
"electronAffinity": "0.81 eV",
"oxidationStates": "+5, +3, -3",
"standardState": "Solid",
"meltingPoint": "1090 K",
"boilingPoint": "887 K",
"density": "5.776 g/cm³",
"family": "Metalloid",
"yearDiscovered": "Ancient",
"numberOfNeutrons": 42,
"numberOfProtons": 33,
"numberOfElectrons": 33,
"numberOfValence": 5,
"valency": 3,
"group": 15,
"period": 4,
"shell": "p-shell",
"specificHeat": "0.329 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 34,
"symbol": "Se",
"name": "Selenium",
"atomicMass": "78.97 u",
"electronConfiguration": "[Ar]4s2 3d10 4p4",
"electronegativity": "2.55",
"atomicRadius": "190 pm",
"ionizationEnergy": "9.752 eV",
"electronAffinity": "2.021 eV",
"oxidationStates": "+6, +4, -2",
"standardState": "Solid",
"meltingPoint": "493.65 K",
"boilingPoint": "958 K",
"density": "4.809 g/cm³",
"family": "Nonmetal",
"yearDiscovered": "1817",
"numberOfNeutrons": 45,
"numberOfProtons": 34,
"numberOfElectrons": 34,
"numberOfValence": 6,
"valency": 2,
"group": 16,
"period": 4,
"shell": "p-shell",
"specificHeat": "0.321 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 35,
"symbol": "Br",
"name": "Bromine",
"atomicMass": "79.90 u",
"electronConfiguration": "[Ar]4s2 3d10 4p5",
"electronegativity": "2.96",
"atomicRadius": "183 pm",
"ionizationEnergy": "11.814 eV",
"electronAffinity": "3.365 eV",
"oxidationStates": "+5, +1, -1",
"standardState": "Liquid",
"meltingPoint": "265.95 K",
"boilingPoint": "331.95 K",
"density": "3.11 g/cm³",
"family": "Halogen",
"yearDiscovered": "1826",
"numberOfNeutrons": 45,
"numberOfProtons": 35,
"numberOfElectrons": 35,
"numberOfValence": 7,
"valency": 1,
"group": 17,
"period": 4,
"shell": "p-shell",
"specificHeat": "0.474 J/g K",
"radioactive": false,
"occurrence": "Natural",
},
{
"atomicNumber": 36,
"symbol": "Kr",
"name": "Krypton",
"atomicMass": "83.80 u",
"electronConfiguration": "[Ar]4s2 3d10 4p6",
"electronegativity": "3",
"atomicRadius": "202 pm",
"ionizationEnergy": "14.000 eV",
"oxidationStates": "0",
"standardState": "Gas",
"meltingPoint": "115.79 K",
"boilingPoint": "119.93 K",
"density": "0.003733 g/cm³",
"family": "Noble gas",