Tungsten Properties, Molecular Formula, Applications - WorldOfChemicals

Tungsten Properties




Tungsten is found naturally on Earth only in chemical compounds. It was identified as a new element in 1781, and first isolated as a metal in 1783. It is the only metal from the third transition series that is known to occur in biomolecules, where it is used in a few species of bacteria. It is the heaviest element known to be used by any living organism. Its important ores include wolframite and scheelite. The unalloyed elemental form is used mainly in electrical applications. Tungsten's many alloys have numerous applications, most notably in incandescent light bulb filaments, X-ray tubes, and superalloys. Tungsten's hardness and high density give it military applications in penetrating projectiles. Tungsten compounds are most often used industrially as catalysts.

Chemical Properties

Appearance Gray Metal
Atomic Number 74
Atomic Weight 183.84 g/mol
Block d
Boiling Point 5555 °C
CAS Number 7440-33-7
Class 4.1
Crystal Structure Body-Centered Cubic
Density 19.25 g/cm3
EINECS Number 231-143-9
Electron Configuration 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 4d10 5p6 4f145d46s2
Group 6
Ionization Energy 770 KJ/mol
Melting Point 3422 °C
NFPA 704 H-3,F-1,R-0,C-NA
Oxidation State 6,5,4,3,2,1,0,−1,-2
PG 3
Period 6
RTECS Number YO7175000
Symbol W