Cobalt
Electron Configuration: 2,8,15,2
Enthalpy of Fusion (kJ mol-1): 15.2
Enthalpy of Vaporisation (kJ mol-1): 382.4
Atomic Radii
Atomic Radius 135 pm
Bohr Radius 152 pm
Covalent Radius 126 pm
Van der Waals 0 pm
Oxidation States
Main Co+2
Other Co-1, Co0, Co+1, Co+3, Co+4, Co+5
Ionisation Energies (kJ mol-1) show graph
M - M+ 760
M+ - M2+ 1646
M2+ - M3+ 3232
M3+ - M4+ 4950
M4+ - M5+ 7670
M5+ - M6+ 9840
M6+ - M7+ 12400
M7+ - M8+ 15100
M8+ - M9+ 17900
M9+ - M10+ 26600