Generators/ChemSharp.Molecules.Generator/Resources/elements.json
[
{
"Name": "Hydrogen",
"Symbol": "H",
"Appearance": "colorless gas",
"AtomicWeight": 1.00784,
"AtomicNumber": 1,
"Group": 1,
"Period": 1,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "1s1",
"ElectronsPerShell": 1,
"Electronegativity": 2.2,
"CovalentRadius": 31,
"AtomicRadius": 31,
"VdWRadius": 120,
"CAS": "12385-13-6"
},
{
"Name": "Helium",
"Symbol": "He",
"Appearance": "colorless gas, exhibiting a gray, cloudy glow (or reddish-orange if an especially high voltage is used) when placed in an electric field",
"AtomicWeight": 4.002602,
"AtomicNumber": 2,
"Group": 18,
"Period": 1,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "1s2",
"ElectronsPerShell": 2,
"CovalentRadius": 28,
"AtomicRadius": 31,
"VdWRadius": 140,
"CAS": "7440-59-7"
},
{
"Name": "Lithium",
"Symbol": "Li",
"Appearance": "silvery-white",
"AtomicWeight": 6.938,
"AtomicNumber": 3,
"Group": 1,
"Period": 2,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "[He] 2s1",
"ElectronsPerShell": "2, 1",
"Electronegativity": 0.98,
"CovalentRadius": 128,
"AtomicRadius": 152,
"VdWRadius": 182,
"CAS": "7439-93-2"
},
{
"Name": "Beryllium",
"Symbol": "Be",
"Appearance": "white-gray metallic",
"AtomicWeight": 9.0121831,
"AtomicNumber": 4,
"Group": 2,
"Period": 2,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "[He] 2s2",
"ElectronsPerShell": "2, 2",
"Electronegativity": 1.57,
"CovalentRadius": 96,
"AtomicRadius": 112,
"VdWRadius": 153,
"CAS": "7440-41-7"
},
{
"Name": "Boron",
"Symbol": "B",
"Appearance": "black-brown",
"AtomicWeight": 10.806,
"AtomicNumber": 5,
"Group": 13,
"Period": 2,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[He] 2s2 2p1",
"ElectronsPerShell": "2, 3",
"Electronegativity": 2.04,
"CovalentRadius": 84,
"AtomicRadius": 90,
"VdWRadius": 192,
"CAS": "7440-42-8"
},
{
"Name": "Carbon",
"Symbol": "C",
"Appearance": "graphite: black, metallic-lookingdiamond: clear",
"AtomicWeight": 12.0096,
"AtomicNumber": 6,
"Group": 14,
"Period": 2,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[He] 2s2 2p2",
"ElectronsPerShell": "2, 4",
"Electronegativity": 2.55,
"CovalentRadius": 77,
"AtomicRadius": 67,
"VdWRadius": 170,
"CAS": "7782-42-5"
},
{
"Name": "Nitrogen",
"Symbol": "N",
"Appearance": "colorless gas, liquid or solid",
"AtomicWeight": 14.00643,
"AtomicNumber": 7,
"Group": 15,
"Period": 2,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[He] 2s2 2p3",
"ElectronsPerShell": "2, 5",
"Electronegativity": 3.04,
"CovalentRadius": 71,
"AtomicRadius": 56,
"VdWRadius": 155,
"CAS": "17778-88-0"
},
{
"Name": "Oxygen",
"Symbol": "O",
"Appearance": "gas: colorlessliquid and solid: pale blue",
"AtomicWeight": 15.99903,
"AtomicNumber": 8,
"Group": 16,
"Period": 2,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[He] 2s2 2p4",
"ElectronsPerShell": "2, 6",
"Electronegativity": 3.44,
"CovalentRadius": 66,
"AtomicRadius": 60,
"VdWRadius": 152,
"CAS": "7782-44-7"
},
{
"Name": "Fluorine",
"Symbol": "F",
"Appearance": "gas: very pale yellowliquid: bright yellowsolid: alpha is opaque, beta is transparent",
"AtomicWeight": 18.998403163,
"AtomicNumber": 9,
"Group": 17,
"Period": 2,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[He] 2s2 2p5[2]",
"ElectronsPerShell": "2, 7",
"Electronegativity": 3.98,
"CovalentRadius": 64,
"AtomicRadius": 50,
"VdWRadius": 135,
"CAS": "7782-41-4"
},
{
"Name": "Neon",
"Symbol": "Ne",
"Appearance": "colorless gas exhibiting an orange-red glow when placed in an electric field",
"AtomicWeight": 20.1797,
"AtomicNumber": 10,
"Group": 18,
"Period": 2,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[He] 2s2 2p6",
"ElectronsPerShell": "2, 8",
"CovalentRadius": 58,
"AtomicRadius": 38,
"VdWRadius": 154,
"CAS": "7440-01-9"
},
{
"Name": "Sodium",
"Symbol": "Na",
"Appearance": "silvery white metallic",
"AtomicWeight": 22.98976928,
"AtomicNumber": 11,
"Group": 1,
"Period": 3,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "[Ne] 3s1",
"ElectronsPerShell": "2, 8, 1",
"Electronegativity": 0.93,
"CovalentRadius": 166,
"AtomicRadius": 186,
"VdWRadius": 227,
"CAS": "7440-23-5"
},
{
"Name": "Magnesium",
"Symbol": "Mg",
"Appearance": "shiny grey solid",
"AtomicWeight": 24.304,
"AtomicNumber": 12,
"Group": 2,
"Period": 3,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "[Ne] 3s2",
"ElectronsPerShell": "2, 8, 2",
"Electronegativity": 1.31,
"CovalentRadius": 141,
"AtomicRadius": 160,
"VdWRadius": 173,
"CAS": "7439-95-4"
},
{
"Name": "Aluminium",
"Symbol": "Al",
"Appearance": "silvery gray metallic",
"AtomicWeight": 26.9815384,
"AtomicNumber": 13,
"Group": 13,
"Period": 3,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Ne] 3s2 3p1",
"ElectronsPerShell": "2, 8, 3",
"Electronegativity": 1.61,
"CovalentRadius": 121,
"AtomicRadius": 143,
"VdWRadius": 184,
"CAS": "7429-90-5"
},
{
"Name": "Silicon",
"Symbol": "Si",
"Appearance": "crystalline, reflective with bluish-tinged faces",
"AtomicWeight": 28.084,
"AtomicNumber": 14,
"Group": 14,
"Period": 3,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Ne] 3s2 3p2",
"ElectronsPerShell": "2, 8, 4",
"Electronegativity": 1.9,
"CovalentRadius": 111,
"AtomicRadius": 111,
"VdWRadius": 210,
"CAS": "7440-21-3"
},
{
"Name": "Phosphorus",
"Symbol": "P",
"Appearance": "waxy white, yellow, red, violet, black metallic-looking",
"AtomicWeight": 30.973761998,
"AtomicNumber": 15,
"Group": 15,
"Period": 3,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Ne] 3s2 3p3",
"ElectronsPerShell": "2, 8, 5",
"Electronegativity": 2.19,
"CovalentRadius": 107,
"AtomicRadius": 100,
"VdWRadius": 180,
"CAS": "7723-14-0"
},
{
"Name": "Sulfur",
"Symbol": "S",
"Appearance": "lemon yellow sintered microcrystals",
"AtomicWeight": 32.059,
"AtomicNumber": 16,
"Group": 16,
"Period": 3,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Ne] 3s2 3p4",
"ElectronsPerShell": "2, 8, 6",
"Electronegativity": 2.58,
"CovalentRadius": 105,
"AtomicRadius": 100,
"VdWRadius": 180,
"CAS": "7704-34-9"
},
{
"Name": "Chlorine",
"Symbol": "Cl",
"Appearance": "pale yellow-green gas",
"AtomicWeight": 35.446,
"AtomicNumber": 17,
"Group": 17,
"Period": 3,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Ne] 3s2 3p5",
"ElectronsPerShell": "2, 8, 7",
"Electronegativity": 3.16,
"CovalentRadius": 102,
"AtomicRadius": 100,
"VdWRadius": 175,
"CAS": "7782-50-5"
},
{
"Name": "Argon",
"Symbol": "Ar",
"Appearance": "colorless gas exhibiting a lilac/violet glow when placed in an electric field",
"AtomicWeight": 39.792,
"AtomicNumber": 18,
"Group": 18,
"Period": 3,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Ne] 3s2 3p6",
"ElectronsPerShell": "2, 8, 8",
"CovalentRadius": 106,
"AtomicRadius": 71,
"VdWRadius": 188,
"CAS": "7440-37-1"
},
{
"Name": "Potassium",
"Symbol": "K",
"Appearance": "silvery gray",
"AtomicWeight": 39.0983,
"AtomicNumber": 19,
"Group": 1,
"Period": 4,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "[Ar] 4s1",
"ElectronsPerShell": "2, 8, 8, 1",
"Electronegativity": 0.82,
"CovalentRadius": 203,
"AtomicRadius": 227,
"VdWRadius": 275,
"CAS": "7440-09-7"
},
{
"Name": "Calcium",
"Symbol": "Ca",
"Appearance": "dull gray, silver; with a pale yellow tint[1]",
"AtomicWeight": 40.078,
"AtomicNumber": 20,
"Group": 2,
"Period": 4,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "[Ar] 4s2",
"ElectronsPerShell": "2, 8, 8, 2",
"Electronegativity": 1,
"CovalentRadius": 176,
"AtomicRadius": 197,
"VdWRadius": 231,
"CAS": "7440-70-2"
},
{
"Name": "Scandium",
"Symbol": "Sc",
"Appearance": "silvery white",
"AtomicWeight": 44.955908,
"AtomicNumber": 21,
"Group": 3,
"Period": 4,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d1 4s2",
"ElectronsPerShell": "2, 8, 9, 2",
"Electronegativity": 1.36,
"CovalentRadius": 170,
"AtomicRadius": 162,
"VdWRadius": 211,
"CAS": "7440-20-2"
},
{
"Name": "Titanium",
"Symbol": "Ti",
"Appearance": "silvery grey-white metallic",
"AtomicWeight": 47.867,
"AtomicNumber": 22,
"Group": 4,
"Period": 4,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d2 4s2",
"ElectronsPerShell": "2, 8, 10, 2",
"Electronegativity": 1.54,
"CovalentRadius": 160,
"AtomicRadius": 147,
"VdWRadius": null,
"CAS": "7440-32-6"
},
{
"Name": "Vanadium",
"Symbol": "V",
"Appearance": "blue-silver-grey metal",
"AtomicWeight": 50.9415,
"AtomicNumber": 23,
"Group": 5,
"Period": 4,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d3 4s2",
"ElectronsPerShell": "2, 8, 11, 2",
"Electronegativity": 1.63,
"CovalentRadius": 153,
"AtomicRadius": 134,
"VdWRadius": null,
"CAS": "7440-62-2"
},
{
"Name": "Chromium",
"Symbol": "Cr",
"Appearance": "silvery metallic",
"AtomicWeight": 51.9961,
"AtomicNumber": 24,
"Group": 6,
"Period": 4,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d5 4s1",
"ElectronsPerShell": "2, 8, 13, 1",
"Electronegativity": 1.66,
"CovalentRadius": 139,
"AtomicRadius": 128,
"VdWRadius": null,
"CAS": "7440-47-3"
},
{
"Name": "Manganese",
"Symbol": "Mn",
"Appearance": "silvery metallic",
"AtomicWeight": 54.938043,
"AtomicNumber": 25,
"Group": 7,
"Period": 4,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d5 4s2",
"ElectronsPerShell": "2, 8, 13, 2",
"Electronegativity": 1.55,
"CovalentRadius": 139,
"AtomicRadius": 127,
"VdWRadius": null,
"CAS": "7439-96-5"
},
{
"Name": "Iron",
"Symbol": "Fe",
"Appearance": "lustrous metallic with a grayish tinge",
"AtomicWeight": 55.845,
"AtomicNumber": 26,
"Group": 8,
"Period": 4,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d6 4s2",
"ElectronsPerShell": "2, 8, 14, 2",
"Electronegativity": 1.83,
"CovalentRadius": 132,
"AtomicRadius": 126,
"VdWRadius": null,
"CAS": "7439-89-6"
},
{
"Name": "Cobalt",
"Symbol": "Co",
"Appearance": "hard lustrous bluish gray metal",
"AtomicWeight": 58.933194,
"AtomicNumber": 27,
"Group": 9,
"Period": 4,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d7 4s2",
"ElectronsPerShell": "2, 8, 15, 2",
"Electronegativity": 1.88,
"CovalentRadius": 126,
"AtomicRadius": 125,
"VdWRadius": null,
"CAS": "7440-48-4"
},
{
"Name": "Nickel",
"Symbol": "Ni",
"Appearance": "lustrous, metallic, and silver with a gold tinge",
"AtomicWeight": 58.6934,
"AtomicNumber": 28,
"Group": 10,
"Period": 4,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d8 4s2 or [Ar] 3d9 4s1",
"ElectronsPerShell": "2, 8, 16, 2 or 2, 8, 17, 1",
"Electronegativity": 1.91,
"CovalentRadius": 124,
"AtomicRadius": 124,
"VdWRadius": 163,
"CAS": "7440-02-0"
},
{
"Name": "Copper",
"Symbol": "Cu",
"Appearance": "red-orange metallic luster",
"AtomicWeight": 63.546,
"AtomicNumber": 29,
"Group": 11,
"Period": 4,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d10 4s1",
"ElectronsPerShell": "2, 8, 18, 1",
"Electronegativity": 1.9,
"CovalentRadius": 132,
"AtomicRadius": 128,
"VdWRadius": 140,
"CAS": "7440-50-8"
},
{
"Name": "Zinc",
"Symbol": "Zn",
"Appearance": "silver-gray",
"AtomicWeight": 65.38,
"AtomicNumber": 30,
"Group": 12,
"Period": 4,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d10 4s2",
"ElectronsPerShell": "2, 8, 18, 2",
"Electronegativity": 1.65,
"CovalentRadius": 122,
"AtomicRadius": 134,
"VdWRadius": 139,
"CAS": "7440-66-6"
},
{
"Name": "Gallium",
"Symbol": "Ga",
"Appearance": "silvery blue",
"AtomicWeight": 69.723,
"AtomicNumber": 31,
"Group": 13,
"Period": 4,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d10 4s2 4p1",
"ElectronsPerShell": "2, 8, 18, 3",
"Electronegativity": 1.81,
"CovalentRadius": 122,
"AtomicRadius": 135,
"VdWRadius": 187,
"CAS": "7440-55-3"
},
{
"Name": "Germanium",
"Symbol": "Ge",
"Appearance": "grayish-white",
"AtomicWeight": 72.63,
"AtomicNumber": 32,
"Group": 14,
"Period": 4,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d10 4s2 4p2",
"ElectronsPerShell": "2, 8, 18, 4",
"Electronegativity": 2.01,
"CovalentRadius": 122,
"AtomicRadius": 122,
"VdWRadius": 211,
"CAS": "7440-56-4"
},
{
"Name": "Arsenic",
"Symbol": "As",
"Appearance": "metallic grey",
"AtomicWeight": 74.921595,
"AtomicNumber": 33,
"Group": 15,
"Period": 4,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d10 4s2 4p3",
"ElectronsPerShell": "2, 8, 18, 5",
"Electronegativity": 2.18,
"CovalentRadius": 119,
"AtomicRadius": 119,
"VdWRadius": 185,
"CAS": "7440-38-2"
},
{
"Name": "Selenium",
"Symbol": "Se",
"Appearance": "grey metallic-looking, red, and vitreous black (not pictured) allotropes",
"AtomicWeight": 78.971,
"AtomicNumber": 34,
"Group": 16,
"Period": 4,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d10 4s2 4p4",
"ElectronsPerShell": "2, 8, 18, 6",
"Electronegativity": 2.55,
"CovalentRadius": 120,
"AtomicRadius": 120,
"VdWRadius": 190,
"CAS": "7782-49-2"
},
{
"Name": "Bromine",
"Symbol": "Br",
"Appearance": "reddish-brown",
"AtomicWeight": 79.901,
"AtomicNumber": 35,
"Group": 17,
"Period": 4,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d10 4s2 4p5",
"ElectronsPerShell": "2, 8, 18, 7",
"Electronegativity": 2.96,
"CovalentRadius": 120,
"AtomicRadius": 120,
"VdWRadius": 185,
"CAS": "7726-95-6"
},
{
"Name": "Krypton",
"Symbol": "Kr",
"Appearance": "colorless gas, exhibiting a whitish glow in an electric field",
"AtomicWeight": 83.798,
"AtomicNumber": 36,
"Group": 18,
"Period": 4,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Ar] 3d10 4s2 4p6",
"ElectronsPerShell": "2, 8, 18, 8",
"Electronegativity": 3,
"CovalentRadius": 116,
"AtomicRadius": 88,
"VdWRadius": 202,
"CAS": "7439-90-9"
},
{
"Name": "Rubidium",
"Symbol": "Rb",
"Appearance": "grey white",
"AtomicWeight": 85.4678,
"AtomicNumber": 37,
"Group": 1,
"Period": 5,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "[Kr] 5s1",
"ElectronsPerShell": "2, 8, 18, 8, 1",
"Electronegativity": 0.82,
"CovalentRadius": 220,
"AtomicRadius": 248,
"VdWRadius": 303,
"CAS": "7440-17-7"
},
{
"Name": "Strontium",
"Symbol": "Sr",
"Appearance": "silvery white metallic; with a pale yellow tint[1]",
"AtomicWeight": 87.62,
"AtomicNumber": 38,
"Group": 2,
"Period": 5,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "[Kr] 5s2",
"ElectronsPerShell": "2, 8, 18, 8, 2",
"Electronegativity": 0.95,
"CovalentRadius": 195,
"AtomicRadius": 215,
"VdWRadius": 249,
"CAS": "7440-24-6"
},
{
"Name": "Yttrium",
"Symbol": "Y",
"Appearance": "silvery white",
"AtomicWeight": 88.90584,
"AtomicNumber": 39,
"Group": 3,
"Period": 5,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d1 5s2",
"ElectronsPerShell": "2, 8, 18, 9, 2",
"Electronegativity": 1.22,
"CovalentRadius": 190,
"AtomicRadius": 180,
"VdWRadius": null,
"CAS": "7440-65-5"
},
{
"Name": "Zirconium",
"Symbol": "Zr",
"Appearance": "silvery white",
"AtomicWeight": 91.224,
"AtomicNumber": 40,
"Group": 4,
"Period": 5,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d2 5s2",
"ElectronsPerShell": "2, 8, 18, 10, 2",
"Electronegativity": 1.33,
"CovalentRadius": 175,
"AtomicRadius": 160,
"VdWRadius": null,
"CAS": "7440-67-7"
},
{
"Name": "Niobium",
"Symbol": "Nb",
"Appearance": "gray metallic, bluish when oxidized",
"AtomicWeight": 92.90637,
"AtomicNumber": 41,
"Group": 5,
"Period": 5,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d4 5s1",
"ElectronsPerShell": "2, 8, 18, 12, 1",
"Electronegativity": 1.6,
"CovalentRadius": 164,
"AtomicRadius": 146,
"VdWRadius": null,
"CAS": "7440-03-1"
},
{
"Name": "Molybdenum",
"Symbol": "Mo",
"Appearance": "gray metallic",
"AtomicWeight": 95.95,
"AtomicNumber": 42,
"Group": 6,
"Period": 5,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d5 5s1",
"ElectronsPerShell": "2, 8, 18, 13, 1",
"Electronegativity": 2.16,
"CovalentRadius": 154,
"AtomicRadius": 139,
"VdWRadius": null,
"CAS": "7439-98-7"
},
{
"Name": "Technetium",
"Symbol": "Tc",
"Appearance": "shiny gray metal",
"AtomicWeight": 97,
"AtomicNumber": 43,
"Group": 7,
"Period": 5,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d5 5s2",
"ElectronsPerShell": "2, 8, 18, 13, 2",
"Electronegativity": 1.9,
"CovalentRadius": 147,
"AtomicRadius": 136,
"VdWRadius": null,
"CAS": "7440-26-8"
},
{
"Name": "Ruthenium",
"Symbol": "Ru",
"Appearance": "silvery white metallic",
"AtomicWeight": 101.07,
"AtomicNumber": 44,
"Group": 8,
"Period": 5,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d7 5s1",
"ElectronsPerShell": "2, 8, 18, 15, 1",
"Electronegativity": 2.2,
"CovalentRadius": 146,
"AtomicRadius": 134,
"VdWRadius": null,
"CAS": "7440-18-8"
},
{
"Name": "Rhodium",
"Symbol": "Rh",
"Appearance": "silvery white metallic",
"AtomicWeight": 102.90549,
"AtomicNumber": 45,
"Group": 9,
"Period": 5,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d8 5s1",
"ElectronsPerShell": "2, 8, 18, 16, 1",
"Electronegativity": 2.28,
"CovalentRadius": 142,
"AtomicRadius": 134,
"VdWRadius": null,
"CAS": "7440-16-6"
},
{
"Name": "Palladium",
"Symbol": "Pd",
"Appearance": "silvery white",
"AtomicWeight": 106.42,
"AtomicNumber": 46,
"Group": 10,
"Period": 5,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d10",
"ElectronsPerShell": "2, 8, 18, 18",
"Electronegativity": 2.2,
"CovalentRadius": 139,
"AtomicRadius": 137,
"VdWRadius": 163,
"CAS": "7440-05-3"
},
{
"Name": "Silver",
"Symbol": "Ag",
"Appearance": "lustrous white metal",
"AtomicWeight": 107.8682,
"AtomicNumber": 47,
"Group": 11,
"Period": 5,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d10 5s1",
"ElectronsPerShell": "2, 8, 18, 18, 1",
"Electronegativity": 1.93,
"CovalentRadius": 145,
"AtomicRadius": 144,
"VdWRadius": 172,
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},
{
"Name": "Cadmium",
"Symbol": "Cd",
"Appearance": "silvery bluish-gray metallic",
"AtomicWeight": 112.414,
"AtomicNumber": 48,
"Group": 12,
"Period": 5,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d10 5s2",
"ElectronsPerShell": "2, 8, 18, 18, 2",
"Electronegativity": 1.69,
"CovalentRadius": 144,
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"VdWRadius": 158,
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},
{
"Name": "Indium",
"Symbol": "In",
"Appearance": "silvery lustrous gray",
"AtomicWeight": 114.818,
"AtomicNumber": 49,
"Group": 13,
"Period": 5,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d10 5s2 5p1",
"ElectronsPerShell": "2, 8, 18, 18, 3",
"Electronegativity": 1.78,
"CovalentRadius": 142,
"AtomicRadius": 167,
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},
{
"Name": "Tin",
"Symbol": "Sn",
"Appearance": "silvery-white (beta, β) or gray (alpha, α)",
"AtomicWeight": 118.71,
"AtomicNumber": 50,
"Group": 14,
"Period": 5,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d10 5s2 5p2",
"ElectronsPerShell": "2, 8, 18, 18, 4",
"Electronegativity": 1.96,
"CovalentRadius": 139,
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"VdWRadius": 217,
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},
{
"Name": "Antimony",
"Symbol": "Sb",
"Appearance": "silvery lustrous gray",
"AtomicWeight": 121.76,
"AtomicNumber": 51,
"Group": 15,
"Period": 5,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d10 5s2 5p3",
"ElectronsPerShell": "2, 8, 18, 18, 5",
"Electronegativity": 2.05,
"CovalentRadius": 139,
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"VdWRadius": 206,
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},
{
"Name": "Tellurium",
"Symbol": "Te",
"Appearance": "silvery lustrous gray (crystalline),brown-black powder (amorphous)",
"AtomicWeight": 127.6,
"AtomicNumber": 52,
"Group": 16,
"Period": 5,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d10 5s2 5p4",
"ElectronsPerShell": "2, 8, 18, 18, 6",
"Electronegativity": 2.1,
"CovalentRadius": 138,
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"VdWRadius": 206,
"CAS": "13494-80-9"
},
{
"Name": "Iodine",
"Symbol": "I",
"Appearance": "lustrous metallic gray solid, black/violet liquid, violet gas",
"AtomicWeight": 126.90447,
"AtomicNumber": 53,
"Group": 17,
"Period": 5,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d10 5s2 5p5",
"ElectronsPerShell": "2, 8, 18, 18, 7",
"Electronegativity": 2.66,
"CovalentRadius": 139,
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"VdWRadius": 198,
"CAS": "7553-56-2"
},
{
"Name": "Xenon",
"Symbol": "Xe",
"Appearance": "colorless gas, exhibiting a blue glow when placed in an electric field",
"AtomicWeight": 131.293,
"AtomicNumber": 54,
"Group": 18,
"Period": 5,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Kr] 4d10 5s2 5p6",
"ElectronsPerShell": "2, 8, 18, 18, 8",
"Electronegativity": 2.6,
"CovalentRadius": 140,
"AtomicRadius": 108,
"VdWRadius": 216,
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},
{
"Name": "Caesium",
"Symbol": "Cs",
"Appearance": "pale gold",
"AtomicWeight": 132.90545196,
"AtomicNumber": 55,
"Group": 1,
"Period": 6,
"Block": "s-block",
"Category": "",
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"ElectronsPerShell": "2, 8, 18, 18, 8, 1",
"Electronegativity": 0.79,
"CovalentRadius": 244,
"AtomicRadius": 265,
"VdWRadius": 343,
"CAS": "7440-46-2"
},
{
"Name": "Barium",
"Symbol": "Ba",
"Appearance": "silvery gray; with a pale yellow tint[1]",
"AtomicWeight": 137.327,
"AtomicNumber": 56,
"Group": 2,
"Period": 6,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "[Xe] 6s2",
"ElectronsPerShell": "2, 8, 18, 18, 8, 2",
"Electronegativity": 0.89,
"CovalentRadius": 215,
"AtomicRadius": 222,
"VdWRadius": 268,
"CAS": "7440-39-3"
},
{
"Name": "Lanthanum",
"Symbol": "La",
"Appearance": "silvery white",
"AtomicWeight": 138.90547,
"AtomicNumber": 57,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 5d1 6s2",
"ElectronsPerShell": "2, 8, 18, 18, 9, 2",
"Electronegativity": 1.1,
"CovalentRadius": 207,
"AtomicRadius": 187,
"VdWRadius": null,
"CAS": "7439-91-0"
},
{
"Name": "Cerium",
"Symbol": "Ce",
"Appearance": "silvery white",
"AtomicWeight": 140.116,
"AtomicNumber": 58,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f1 5d1 6s2[2]",
"ElectronsPerShell": "2, 8, 18, 19, 9, 2",
"Electronegativity": 1.12,
"CovalentRadius": 204,
"AtomicRadius": 181,
"VdWRadius": null,
"CAS": "7440-45-1"
},
{
"Name": "Praseodymium",
"Symbol": "Pr",
"Appearance": "grayish white",
"AtomicWeight": 140.90766,
"AtomicNumber": 59,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f3 6s2",
"ElectronsPerShell": "2, 8, 18, 21, 8, 2",
"Electronegativity": 1.13,
"CovalentRadius": 203,
"AtomicRadius": 182,
"VdWRadius": null,
"CAS": "7440-10-0"
},
{
"Name": "Neodymium",
"Symbol": "Nd",
"Appearance": "silvery white",
"AtomicWeight": 144.242,
"AtomicNumber": 60,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f4 6s2",
"ElectronsPerShell": "2, 8, 18, 22, 8, 2",
"Electronegativity": 1.14,
"CovalentRadius": 201,
"AtomicRadius": 181,
"VdWRadius": null,
"CAS": "7440-00-8"
},
{
"Name": "Promethium",
"Symbol": "Pm",
"Appearance": "metallic",
"AtomicWeight": 145,
"AtomicNumber": 61,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f5 6s2",
"ElectronsPerShell": "2, 8, 18, 23, 8, 2",
"Electronegativity": 1.13,
"CovalentRadius": 199,
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"VdWRadius": null,
"CAS": "7440-12-2"
},
{
"Name": "Samarium",
"Symbol": "Sm",
"Appearance": "silvery white",
"AtomicWeight": 150.36,
"AtomicNumber": 62,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f6 6s2",
"ElectronsPerShell": "2, 8, 18, 24, 8, 2",
"Electronegativity": 1.17,
"CovalentRadius": 198,
"AtomicRadius": 180,
"VdWRadius": null,
"CAS": "7440-19-9"
},
{
"Name": "Europium",
"Symbol": "Eu",
"Appearance": "silvery white, with a pale yellow tint;[1] but rarely seen without oxide discoloration",
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"AtomicNumber": 63,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f7 6s2",
"ElectronsPerShell": "2, 8, 18, 25, 8, 2",
"Electronegativity": 1.2,
"CovalentRadius": 198,
"AtomicRadius": 180,
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"CAS": "7440-53-1"
},
{
"Name": "Gadolinium",
"Symbol": "Gd",
"Appearance": "silvery white",
"AtomicWeight": 157.25,
"AtomicNumber": 64,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f7 5d1 6s2",
"ElectronsPerShell": "2, 8, 18, 25, 9, 2",
"Electronegativity": 1.2,
"CovalentRadius": 196,
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"VdWRadius": null,
"CAS": "7440-54-2"
},
{
"Name": "Terbium",
"Symbol": "Tb",
"Appearance": "silvery white",
"AtomicWeight": 158.925354,
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"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f9 6s2",
"ElectronsPerShell": "2, 8, 18, 27, 8, 2",
"Electronegativity": 1.2,
"CovalentRadius": 194,
"AtomicRadius": 177,
"VdWRadius": null,
"CAS": "7440-27-9"
},
{
"Name": "Dysprosium",
"Symbol": "Dy",
"Appearance": "silvery white",
"AtomicWeight": 162.5,
"AtomicNumber": 66,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f10 6s2",
"ElectronsPerShell": "2, 8, 18, 28, 8, 2",
"Electronegativity": 1.22,
"CovalentRadius": 192,
"AtomicRadius": 178,
"VdWRadius": null,
"CAS": "7429-91-6"
},
{
"Name": "Holmium",
"Symbol": "Ho",
"Appearance": "silvery white",
"AtomicWeight": 164.930328,
"AtomicNumber": 67,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f11 6s2",
"ElectronsPerShell": "2, 8, 18, 29, 8, 2",
"Electronegativity": 1.23,
"CovalentRadius": 192,
"AtomicRadius": 176,
"VdWRadius": null,
"CAS": "7440-60-0"
},
{
"Name": "Erbium",
"Symbol": "Er",
"Appearance": "silvery white",
"AtomicWeight": 167.259,
"AtomicNumber": 68,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f12 6s2",
"ElectronsPerShell": "2, 8, 18, 30, 8, 2",
"Electronegativity": 1.24,
"CovalentRadius": 189,
"AtomicRadius": 176,
"VdWRadius": null,
"CAS": "7440-52-0"
},
{
"Name": "Thulium",
"Symbol": "Tm",
"Appearance": "silvery gray",
"AtomicWeight": 168.934218,
"AtomicNumber": 69,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f13 6s2",
"ElectronsPerShell": "2, 8, 18, 31, 8, 2",
"Electronegativity": 1.25,
"CovalentRadius": 190,
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"VdWRadius": null,
"CAS": "7440-30-4"
},
{
"Name": "Ytterbium",
"Symbol": "Yb",
"Appearance": "silvery white; with a pale yellow tint[1]",
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"AtomicNumber": 70,
"Period": 6,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f14 6s2",
"ElectronsPerShell": "2, 8, 18, 32, 8, 2",
"Electronegativity": 1.1,
"CovalentRadius": 187,
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"VdWRadius": null,
"CAS": "7440-64-4"
},
{
"Name": "Lutetium",
"Symbol": "Lu",
"Appearance": "silvery white",
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"AtomicNumber": 71,
"Group": 3,
"Period": 6,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f14 5d1 6s2",
"ElectronsPerShell": "2, 8, 18, 32, 9, 2",
"Electronegativity": 1.27,
"CovalentRadius": 187,
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"CAS": "7439-94-3"
},
{
"Name": "Hafnium",
"Symbol": "Hf",
"Appearance": "steel gray",
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"Group": 4,
"Period": 6,
"Block": "d-block",
"Category": "",
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"ElectronsPerShell": "2, 8, 18, 32, 10, 2",
"Electronegativity": 1.3,
"CovalentRadius": 175,
"AtomicRadius": 159,
"VdWRadius": null,
"CAS": "7440-58-6"
},
{
"Name": "Tantalum",
"Symbol": "Ta",
"Appearance": "gray blue",
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"Group": 5,
"Period": 6,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f14 5d3 6s2",
"ElectronsPerShell": "2, 8, 18, 32, 11, 2",
"Electronegativity": 1.5,
"CovalentRadius": 170,
"AtomicRadius": 146,
"VdWRadius": null,
"CAS": "7440-25-7"
},
{
"Name": "Tungsten",
"Symbol": "W",
"Appearance": "grayish white, lustrous",
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"Group": 6,
"Period": 6,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f14 5d4 6s2[2]",
"ElectronsPerShell": "2, 8, 18, 32, 12, 2",
"Electronegativity": 2.36,
"CovalentRadius": 162,
"AtomicRadius": 139,
"VdWRadius": null,
"CAS": "7440-33-7"
},
{
"Name": "Rhenium",
"Symbol": "Re",
"Appearance": "silvery-grayish",
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"Group": 7,
"Period": 6,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f14 5d5 6s2",
"ElectronsPerShell": "2, 8, 18, 32, 13, 2",
"Electronegativity": 1.9,
"CovalentRadius": 151,
"AtomicRadius": 137,
"VdWRadius": null,
"CAS": "7440-15-5"
},
{
"Name": "Osmium",
"Symbol": "Os",
"Appearance": "silvery, blue cast",
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"Group": 8,
"Period": 6,
"Block": "d-block",
"Category": "",
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"Electronegativity": 2.2,
"CovalentRadius": 144,
"AtomicRadius": 135,
"VdWRadius": null,
"CAS": "7440-04-2"
},
{
"Name": "Iridium",
"Symbol": "Ir",
"Appearance": "silvery white",
"AtomicWeight": 192.217,
"AtomicNumber": 77,
"Group": 9,
"Period": 6,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f14 5d7 6s2",
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"Electronegativity": 2.2,
"CovalentRadius": 141,
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"VdWRadius": null,
"CAS": "7439-88-5"
},
{
"Name": "Platinum",
"Symbol": "Pt",
"Appearance": "silvery white",
"AtomicWeight": 195.084,
"AtomicNumber": 78,
"Group": 10,
"Period": 6,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f14 5d9 6s1",
"ElectronsPerShell": "2, 8, 18, 32, 17, 1",
"Electronegativity": 2.28,
"CovalentRadius": 136,
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"VdWRadius": 175,
"CAS": "7440-06-4"
},
{
"Name": "Gold",
"Symbol": "Au",
"Appearance": "metallic yellow",
"AtomicWeight": 196.96657,
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"Group": 11,
"Period": 6,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f14 5d10 6s1",
"ElectronsPerShell": "2, 8, 18, 32, 18, 1",
"Electronegativity": 2.54,
"CovalentRadius": 136,
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"VdWRadius": 166,
"CAS": "7440-57-5"
},
{
"Name": "Mercury",
"Symbol": "Hg",
"Appearance": "shiny, silvery liquid",
"AtomicWeight": 200.592,
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"Group": 12,
"Period": 6,
"Block": "d-block",
"Category": "",
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"Electronegativity": 2,
"CovalentRadius": 132,
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"VdWRadius": 155,
"CAS": "7439-97-6"
},
{
"Name": "Thallium",
"Symbol": "Tl",
"Appearance": "silvery white",
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"Group": 13,
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"Block": "p-block",
"Category": "",
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"Electronegativity": 1.62,
"CovalentRadius": 145,
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"CAS": "7440-28-0"
},
{
"Name": "Lead",
"Symbol": "Pb",
"Appearance": "metallic gray",
"AtomicWeight": 207.2,
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"Group": 14,
"Period": 6,
"Block": "p-block",
"Category": "",
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"Electronegativity": 1.87,
"CovalentRadius": 146,
"AtomicRadius": 175,
"VdWRadius": 202,
"CAS": "7439-92-1"
},
{
"Name": "Bismuth",
"Symbol": "Bi",
"Appearance": "lustrous brownish silver",
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"AtomicNumber": 83,
"Group": 15,
"Period": 6,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f14 5d10 6s2 6p3",
"ElectronsPerShell": "2, 8, 18, 32, 18, 5",
"Electronegativity": 2.02,
"CovalentRadius": 148,
"AtomicRadius": 156,
"VdWRadius": 207,
"CAS": "7440-69-9"
},
{
"Name": "Polonium",
"Symbol": "Po",
"Appearance": "silvery",
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"Group": 16,
"Period": 6,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f14 5d10 6s2 6p4",
"ElectronsPerShell": "2, 8, 18, 32, 18, 6",
"Electronegativity": 2,
"CovalentRadius": 140,
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"VdWRadius": 197,
"CAS": "7440-08-6"
},
{
"Name": "Astatine",
"Symbol": "At",
"Appearance": "unknown, probably metallic",
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"AtomicNumber": 85,
"Group": 17,
"Period": 6,
"Block": "p-block",
"Category": "",
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"Electronegativity": 2.2,
"CovalentRadius": 150,
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"VdWRadius": 202,
"CAS": "7440-68-8"
},
{
"Name": "Radon",
"Symbol": "Rn",
"Appearance": "colorless gas",
"AtomicWeight": 222,
"AtomicNumber": 86,
"Group": 18,
"Period": 6,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Xe] 4f14 5d10 6s2 6p6",
"ElectronsPerShell": "2, 8, 18, 32, 18, 8",
"Electronegativity": 2.2,
"CovalentRadius": 150,
"AtomicRadius": 120,
"VdWRadius": 220,
"CAS": "10043-92-2"
},
{
"Name": "Francium",
"Symbol": "Fr",
"Appearance": "",
"AtomicWeight": 223,
"AtomicNumber": 87,
"Group": 1,
"Period": 7,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "[Rn] 7s1",
"ElectronsPerShell": "2, 8, 18, 32, 18, 8, 1",
"Electronegativity": 0.79,
"CovalentRadius": 260,
"AtomicRadius": 210,
"VdWRadius": 348,
"CAS": "7440-73-5"
},
{
"Name": "Radium",
"Symbol": "Ra",
"Appearance": "silvery white metallic",
"AtomicWeight": 226,
"AtomicNumber": 88,
"Group": 2,
"Period": 7,
"Block": "s-block",
"Category": "",
"ElectronConfiguration": "[Rn] 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 18, 8, 2",
"Electronegativity": 0.9,
"CovalentRadius": 221,
"AtomicRadius": 215,
"VdWRadius": 283,
"CAS": "7440-14-4"
},
{
"Name": "Actinium",
"Symbol": "Ac",
"Appearance": "silvery-white, glowing with an eerie blue light;[1] sometimes with a golden cast[2]",
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"AtomicNumber": 89,
"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 6d1 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 18, 9, 2",
"Electronegativity": 1.1,
"CovalentRadius": 215,
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"VdWRadius": null,
"CAS": "7440-34-8"
},
{
"Name": "Thorium",
"Symbol": "Th",
"Appearance": "silvery, often with black tarnish",
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"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 6d2 7s2",
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"Electronegativity": 1.3,
"CovalentRadius": 206,
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"CAS": "7440-29-1"
},
{
"Name": "Protactinium",
"Symbol": "Pa",
"Appearance": "bright, silvery metallic luster",
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"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f2 6d1 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 20, 9, 2",
"Electronegativity": 1.5,
"CovalentRadius": 200,
"AtomicRadius": 163,
"VdWRadius": null,
"CAS": "7440-13-3"
},
{
"Name": "Uranium",
"Symbol": "U",
"Appearance": "silvery gray metallic; corrodes to a spalling black oxide coat in air",
"AtomicWeight": 238.02891,
"AtomicNumber": 92,
"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f3 6d1 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 21, 9, 2",
"Electronegativity": 1.38,
"CovalentRadius": 196,
"AtomicRadius": 156,
"VdWRadius": 186,
"CAS": "7440-61-1"
},
{
"Name": "Neptunium",
"Symbol": "Np",
"Appearance": "silvery metallic",
"AtomicWeight": 237,
"AtomicNumber": 93,
"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f4 6d1 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 22, 9, 2",
"Electronegativity": 1.36,
"CovalentRadius": 190,
"AtomicRadius": 155,
"VdWRadius": null,
"CAS": "7439-99-8"
},
{
"Name": "Plutonium",
"Symbol": "Pu",
"Appearance": "silvery white, tarnishing to dark gray in air",
"AtomicWeight": 244,
"AtomicNumber": 94,
"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f6 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 24, 8, 2",
"Electronegativity": 1.28,
"CovalentRadius": 187,
"AtomicRadius": 159,
"VdWRadius": null,
"CAS": "7440-07-5"
},
{
"Name": "Americium",
"Symbol": "Am",
"Appearance": "silvery white",
"AtomicWeight": 243,
"AtomicNumber": 95,
"Group": 3,
"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f7 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 25, 8, 2",
"Electronegativity": 1.3,
"CovalentRadius": 180,
"AtomicRadius": 173,
"VdWRadius": null,
"CAS": "7440-35-9"
},
{
"Name": "Curium",
"Symbol": "Cm",
"Appearance": "silvery metallic, glows purple in the dark",
"AtomicWeight": 247,
"AtomicNumber": 96,
"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f7 6d1 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 25, 9, 2",
"Electronegativity": 1.3,
"CovalentRadius": 169,
"AtomicRadius": 174,
"VdWRadius": null,
"CAS": "7440-51-9"
},
{
"Name": "Berkelium",
"Symbol": "Bk",
"Appearance": "silvery",
"AtomicWeight": 247,
"AtomicNumber": 97,
"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f9 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 27, 8, 2",
"Electronegativity": 1.3,
"CovalentRadius": 168,
"AtomicRadius": 170,
"VdWRadius": null,
"CAS": "7440-40-6"
},
{
"Name": "Californium",
"Symbol": "Cf",
"Appearance": "silvery",
"AtomicWeight": 251,
"AtomicNumber": 98,
"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f10 7s2[1]",
"ElectronsPerShell": "2, 8, 18, 32, 28, 8, 2",
"Electronegativity": 1.3,
"CovalentRadius": 168,
"AtomicRadius": 168,
"VdWRadius": null,
"CAS": "7440-71-3"
},
{
"Name": "Einsteinium",
"Symbol": "Es",
"Appearance": "silvery; glows blue in the dark",
"AtomicWeight": 252,
"AtomicNumber": 99,
"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f11 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 29, 8, 2",
"Electronegativity": 1.3,
"CovalentRadius": 165,
"AtomicRadius": 165,
"VdWRadius": null,
"CAS": "7429-92-7"
},
{
"Name": "Fermium",
"Symbol": "Fm",
"Appearance": "",
"AtomicWeight": 257,
"AtomicNumber": 100,
"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f12 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 30, 8, 2",
"Electronegativity": 1.3,
"CovalentRadius": 167,
"AtomicRadius": 167,
"VdWRadius": null,
"CAS": "7440-72-4"
},
{
"Name": "Mendelevium",
"Symbol": "Md",
"Appearance": "",
"AtomicWeight": 258,
"AtomicNumber": 101,
"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f13 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 31, 8, 2",
"Electronegativity": 1.3,
"CovalentRadius": 173,
"AtomicRadius": 173,
"VdWRadius": null,
"CAS": "7440-11-1"
},
{
"Name": "Nobelium",
"Symbol": "No",
"Appearance": "",
"AtomicWeight": 259,
"AtomicNumber": 102,
"Period": 7,
"Block": "f-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 7s2",
"ElectronsPerShell": "2, 8, 18, 32, 32, 8, 2",
"Electronegativity": 1.3,
"CovalentRadius": 176,
"AtomicRadius": 176,
"VdWRadius": null,
"CAS": "10028-14-5"
},
{
"Name": "Lawrencium",
"Symbol": "Lr",
"Appearance": "silvery (predicted)[1]",
"AtomicWeight": 266,
"AtomicNumber": 103,
"Group": 3,
"Period": 7,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 7s2 7p1",
"ElectronsPerShell": "2, 8, 18, 32, 32, 8, 3",
"Electronegativity": 1.3,
"CovalentRadius": 161,
"AtomicRadius": 161,
"VdWRadius": null,
"CAS": "22537-19-5"
},
{
"Name": "Rutherfordium",
"Symbol": "Rf",
"Appearance": "",
"AtomicWeight": 267,
"AtomicNumber": 104,
"Group": 4,
"Period": 7,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d2 7s2[1][2]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 10, 2",
"Electronegativity": null,
"CovalentRadius": 157,
"AtomicRadius": 150,
"VdWRadius": null,
"CAS": "53850-36-5"
},
{
"Name": "Dubnium",
"Symbol": "Db",
"Appearance": "",
"AtomicWeight": 268,
"AtomicNumber": 105,
"Group": 5,
"Period": 7,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d3 7s2[3]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 11, 2",
"Electronegativity": null,
"CovalentRadius": 149,
"AtomicRadius": 139,
"VdWRadius": null,
"CAS": "53850-35-4"
},
{
"Name": "Seaborgium",
"Symbol": "Sg",
"Appearance": "",
"AtomicWeight": 269,
"AtomicNumber": 106,
"Group": 6,
"Period": 7,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d4 7s2[1]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 12, 2",
"Electronegativity": null,
"CovalentRadius": 143,
"AtomicRadius": 132,
"VdWRadius": null,
"CAS": "54038-81-2"
},
{
"Name": "Bohrium",
"Symbol": "Bh",
"Appearance": "",
"AtomicWeight": 270,
"AtomicNumber": 107,
"Group": 7,
"Period": 7,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d5 7s2[1][2]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 13, 2",
"Electronegativity": null,
"CovalentRadius": 141,
"AtomicRadius": 128,
"VdWRadius": null,
"CAS": "54037-14-8"
},
{
"Name": "Hassium",
"Symbol": "Hs",
"Appearance": "",
"AtomicWeight": 269,
"AtomicNumber": 108,
"Group": 8,
"Period": 7,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d6 7s2[4]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 14, 2",
"Electronegativity": null,
"CovalentRadius": 134,
"AtomicRadius": 126,
"VdWRadius": null,
"CAS": "54037-57-9"
},
{
"Name": "Meitnerium",
"Symbol": "Mt",
"Appearance": "",
"AtomicWeight": 278,
"AtomicNumber": 109,
"Group": 9,
"Period": 7,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d7 7s2 (predicted)[3][4]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 15, 2 (predicted)",
"Electronegativity": null,
"CovalentRadius": 129,
"AtomicRadius": 128,
"VdWRadius": null,
"CAS": "54038-01-6"
},
{
"Name": "Darmstadtium",
"Symbol": "Ds",
"Appearance": "",
"AtomicWeight": 281,
"AtomicNumber": 110,
"Group": 10,
"Period": 7,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d8 7s2 (predicted)[3]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 16, 2 (predicted)[3]",
"Electronegativity": null,
"CovalentRadius": 128,
"AtomicRadius": 132,
"VdWRadius": null,
"CAS": "54083-77-1"
},
{
"Name": "Roentgenium",
"Symbol": "Rg",
"Appearance": "silvery (predicted)[1]",
"AtomicWeight": 282,
"AtomicNumber": 111,
"Group": 11,
"Period": 7,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d9 7s2 (predicted)[1][2]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 17, 2 (predicted)",
"Electronegativity": null,
"CovalentRadius": 121,
"AtomicRadius": 138,
"VdWRadius": null,
"CAS": "54386-24-2"
},
{
"Name": "Copernicium",
"Symbol": "Cn",
"Appearance": "",
"AtomicWeight": 285,
"AtomicNumber": 112,
"Group": 12,
"Period": 7,
"Block": "d-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d10 7s2 (predicted)[1]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 18, 2 (predicted)",
"Electronegativity": null,
"CovalentRadius": 122,
"AtomicRadius": 147,
"VdWRadius": null,
"CAS": "54084-26-3"
},
{
"Name": "Nihonium",
"Symbol": "Nh",
"Appearance": "",
"AtomicWeight": 286,
"AtomicNumber": 113,
"Group": 13,
"Period": 7,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d10 7s2 7p1 (predicted)[1]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 18, 3 (predicted)",
"Electronegativity": null,
"CovalentRadius": 172,
"AtomicRadius": 170,
"VdWRadius": null,
"CAS": "54084-70-7"
},
{
"Name": "Flerovium",
"Symbol": "Fl",
"Appearance": "",
"AtomicWeight": 289,
"AtomicNumber": 114,
"Group": 14,
"Period": 7,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d10 7s2 7p2 (predicted)[3]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 18, 4 (predicted)",
"Electronegativity": null,
"CovalentRadius": 171,
"AtomicRadius": 180,
"VdWRadius": null,
"CAS": "54085-16-4"
},
{
"Name": "Moscovium",
"Symbol": "Mc",
"Appearance": "",
"AtomicWeight": 290,
"AtomicNumber": 115,
"Group": 15,
"Period": 7,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d10 7s2 7p3 (predicted)[1]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 18, 5 (predicted)",
"Electronegativity": null,
"CovalentRadius": 156,
"AtomicRadius": 187,
"VdWRadius": null,
"CAS": "54085-64-2"
},
{
"Name": "Livermorium",
"Symbol": "Lv",
"Appearance": "",
"AtomicWeight": 293,
"AtomicNumber": 116,
"Group": 16,
"Period": 7,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d10 7s2 7p4 (predicted)[1]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 18, 6 (predicted)",
"Electronegativity": null,
"CovalentRadius": 162,
"AtomicRadius": 183,
"VdWRadius": null,
"CAS": "54100-71-9"
},
{
"Name": "Tennessine",
"Symbol": "Ts",
"Appearance": "semimetallic (predicted)[2]",
"AtomicWeight": 294,
"AtomicNumber": 117,
"Group": 17,
"Period": 7,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d10 7s2 7p5 (predicted)[3]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 18, 7 (predicted)",
"Electronegativity": null,
"CovalentRadius": 156,
"AtomicRadius": 138,
"VdWRadius": null,
"CAS": "54101-14-3"
},
{
"Name": "Oganesson",
"Symbol": "Og",
"Appearance": "metallic (predicted)",
"AtomicWeight": 294,
"AtomicNumber": 118,
"Group": 18,
"Period": 7,
"Block": "p-block",
"Category": "",
"ElectronConfiguration": "[Rn] 5f14 6d10 7s2 7p6 (predicted)[3][4]",
"ElectronsPerShell": "2, 8, 18, 32, 32, 18, 8 (predicted)",
"Electronegativity": null,
"CovalentRadius": 157,
"AtomicRadius": 157,
"VdWRadius": null,
"CAS": "54144-19-3"
}
]