Thorium
Electron Configuration: 2,8,18,32,18,10,2
Enthalpy of Fusion (kJ mol-1): 19.2
Enthalpy of Vaporisation (kJ mol-1): 513.7
Atomic Radii
Atomic Radius 180 pm
Bohr Radius 0 pm
Covalent Radius 0 pm
Van der Waals 0 pm
Oxidation States
Main Th+4
Other Th+2, Th+3
Ionisation Energies (kJ mol-1) show graph
M - M+ 587
M+ - M2+ 1110
M2+ - M3+ 1978
M3+ - M4+ 2780