74
183.84
W
Tungsten
Identification
CAS Number: 7440-33-7
Discovery Year: 1783
Discoverer: Fausto and Juan José de Elhuyar
Discovery Location: Spain
Properties
Atomic Dimensions
Atomic Radius: 135 pm →
Atomic Radius (Rahm): 252.99999999999997 pm
Covalent Radius: 162 pm →Van der Waals Radius: 218.00000000000003 pm
Metallic Radius: 130 pm
Atomic Volume: 9.53 cm³/mol
Lattice Constant: 3.16 Å
Thermodynamics
Electronic Structure
Electron Config: [Xe] 4f14 5d4 6s2
Block: d
Period: 6 →Group: 6 →Electronegativity: 1.7 →Electron Affinity: 0.81626 eV →Oxidation States: 0, +2, +3, +4, +5, +6
Abundance & Geochemistry
Crust Abundance: 1.25 mg/kg
Sea Abundance: 0.0001 mg/L
Goldschmidt Class: litophile
About
White or grey metallic transition element,formerly called Wolfram. Forms a protective oxide in air and can be oxidized at high temperature. First isolated by Jose and Fausto de Elhuyer in 1783.
Isotopes
W-184 184 30.64%
W-186 186 28.43%
W-182 182 26.50%
W-183 183 14.31%
W-180 180 0.1200%
