Neptunium
Electron Configuration: 2,8,18,32,22,9,2
Enthalpy of Fusion (kJ mol-1): 9.46
Enthalpy of Vaporisation (kJ mol-1): 336.6
Atomic Radii
Atomic Radius 175 pm
Bohr Radius 0 pm
Covalent Radius 0 pm
Van der Waals 0 pm
Oxidation States
Main Np+5
Other Np+2, Np+3, Np+4, Np+6, Np+7
Ionisation Energies (kJ mol-1) show graph
M - M+ 597