PERIODIC ELEMENT
W (Tungsten)

 



Atomic number : 74
Atomic mass : 183.85 g.mol-1
Electronegativity according to Pauling : 1.7
Density : 19.3 g.cm-3 at 20 °C
Melting point : 3410 °C
Boiling point : 5660 °C
Vanderwaals radius : 0.137 nm
Ionic radius : 0.068 nm (+4); 0.067 (+6) nm
Isotopes : 10
Electronic shell : [Xe] 4f14 5d4 6s2
Energy of first ionisation : 768.6 kJ.mol-1
Standard Potential : - 0.05 V (W+4/ W)
Discovered by : Fausto and Juan Jose de Elhuyar in 1783
 
Atomic Structure Uses (used widely in electronics industry)