Name :  Ruthenium
Symbol :  Ru
Atomic Number :  44
Atomic Weight :  101.07
Specific Heat :  0.238 J/gK
Melting Point :  2334°C
Vaporization :  595.0 kJ/mol
Boiling Point :  4150°C
Electronegativity :  2.2
Density@293 K :  12.2 g/cm³
Discovered :  Karl Klaus, Russia, 1844
Description :  Rare, extremely brittle, silver-gray metal.
Uses :  Used to harden platinum and palladium. Aircraft magnetos use platinum alloy with 10% ruthenium.