Barium
Electron Configuration: 2,8,18,18,8,2
Enthalpy of Fusion (kJ mol-1): 7.66
Enthalpy of Vaporisation (kJ mol-1): 150.9
Atomic Radii
Atomic Radius 215 pm
Bohr Radius 253 pm
Covalent Radius 198 pm
Van der Waals 0 pm
Oxidation States
Main Ba+2
Other
Ionisation Energies (kJ mol-1) show graph
M - M+ 502.8
M+ - M2+ 965.1
M2+ - M3+ 3600
M3+ - M4+ 4700
M4+ - M5+ 6000
M5+ - M6+ 7700
M6+ - M7+ 9000
M7+ - M8+ 10200
M8+ - M9+ 13500
M9+ - M10+ 15100