Osmium
Electron Configuration: 2,8,18,32,14,2
Enthalpy of Fusion (kJ mol-1): 29.3
Enthalpy of Vaporisation (kJ mol-1): 738
Atomic Radii
Atomic Radius 130 pm
Bohr Radius 185 pm
Covalent Radius 128 pm
Van der Waals 0 pm
Oxidation States
Main Os+4
Other Os-2, Os0, Os+1, Os+2, Os+3, Os+5, Os+6, Os+7, Os+8
Ionisation Energies (kJ mol-1) show graph
M - M+ 840
M+ - M2+ 1600
M2+ - M3+ 2400
M3+ - M4+ 3900
M4+ - M5+ 5200
M5+ - M6+ 6600
M6+ - M7+ 8100
M7+ - M8+ 9500