Praseodymium
Electron Configuration: 2,8,18,21,8,2
Enthalpy of Fusion (kJ mol-1): 11.3
Enthalpy of Vaporisation (kJ mol-1): 357
Atomic Radii
Atomic Radius 185 pm
Bohr Radius 247 pm
Covalent Radius 0 pm
Van der Waals 0 pm
Oxidation States
Main Pr+3
Other Pr+4
Ionisation Energies (kJ mol-1) show graph
M - M+ 523.1
M+ - M2+ 1018
M2+ - M3+ 2086
M3+ - M4+ 3761
M4+ - M5+ 5543