Tungsten (W)

From Wikipedia, the free encyclopediaTungsten, also known as wolfram, is a chemical element with symbol W and atomic number 74. The word tungsten comes from the Swedish language tung sten, which directly translates to heavy stone. Its name in Swedish is volfram, however, in order to distinguish it from scheelite, which in Swedish is alternatively named tungsten.

Tungsten in the periodic table

SymbolW
Atomic number74
Group6
Period6
Blockd
Element categoryTransition Metal

Physical properties

Phase at STPSolid
Density19.25 g/cm3
Atomic weight183.841 u
Melting point3695 K
3421.85 °C
6191.33 °F
Boiling point6203 K
5929.85 °C
10705.73 °F

Atomära egenskaper

Electronegativity (Pauling Scale)2.36
Electron affinity78.76 kJ/mol
Ionization energies
1770 kJ/mol
2 1700 kJ/mol

Electron configuration

Electron configuration1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d4 6s2
Electrons per shell2, 8, 18, 32, 12, 2

History

Discovered1781
Discovered byCarl Wilhelm Scheele