In 1781, Carl Wilhelm Scheele discovered that a new acid, tungstic acid, could be made from scheelite. Tungsten was isolated by on Juan José D'Elhuyard and Don Fausto D'Elhuyard, Spanish chemists and brothers, in 1783, and they are credited with the discovery of the element.
Name: Tungsten
Symbol: W
Atomic number: 74
Atomic weight: 183.84
State: solid
Group, period, block: 6, 6, d
Color: grayish white, lustrous
Classification: transition metal
Electron configuration: 4f14 5d4 6s2[1]
2,8,18,32,12,2
Physical properties
Density: 19.25 g/cm-3
Melting point: 3695 K, 3422 °C, 6192 °F
Boiling point: 5828 K, 5555 °C, 10031 °F
Atomic properties
Oxidation states: 6, 5, 4, 3, 2, 1, 0, -1, -2
Electronegativity: 2.36 (Pauling scale)
Ionization energies: 1st: 578.8 kJ·mol-1
Covalent radius: 162±7 pm
Van der Waals radius: no data
- W
Electron Configuration
Isotopes
There are five naturally occurring isotopes of tungsten exist, 180W, 182W, 183W, 184W, and 186W.