Name :  Osmium
Symbol :  Os
Atomic Number :  76
Atomic Weight :  190.23
Specific Heat :  0.13 J/gK
Melting Point :  3054°C
Vaporization :  746.0 kJ/mol
Boiling Point :  5027°C
Electronegativity :  2.2
Density@293 K :  22.40 g/cm³
Discovered :  Smithson Tenant, England, 1804
Description :  Hard fine black powder or hard, lustrous, blue-white metal.
Uses :  Used to tip gold pen points, instrument pivots, to make electric light filaments. Used for high temp. alloys and pressure bearings. Very hard and resists corrosion better than any other.