Thulium
Electron Configuration: 2,8,18,31,8,2
Enthalpy of Fusion (kJ mol-1): 18.4
Enthalpy of Vaporisation (kJ mol-1): 247
Atomic Radii
Atomic Radius 175 pm
Bohr Radius 222 pm
Covalent Radius 0 pm
Van der Waals 0 pm
Oxidation States
Main Tm+3
Other Tm+2
Ionisation Energies (kJ mol-1) show graph
M - M+ 596.7
M+ - M2+ 1163
M2+ - M3+ 2285
M3+ - M4+ 4119