Home 74 W Tungsten back to the periodic table
 
Atomic number   74
Symbol   W
Atomic weight   183.85
Density [g/cm3]   19.26
Melting point [°C]   3410
Boiling point [°C]   5930
1st Ionization energy [eV]   7.98
Electronic configuration   [Xe] 4f14 5d4  6s2
Oxidation number (most stable)   6, 5, 4, 3, 2, 0
Atomic radius [pm]   137.0
Ionic radius [pm]   65 (4+)
Abundance in crustal rocks [ppm]   1.2
Origin of the name   named after the mineral Wolframite
Discovery   1783 by the Spanish brothers Juan José and Fausto de Elhuyar 
Uses   as alloying constituent of steel as well as for filaments in bulbs.
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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