Number of Isotopes: 2
Electron Affinity (kJ/mol): 0
First Ionization Energy (kJ/mol): 2372.3
Second Ionization Energy (kJ/mol): 5250.3
Third Ionization Energy (kJ/mol): Not applicable
Electronegativity: Not defined (Pauling Scale)
Polarizability (Å3): 0.198
Atomic Volume (cm3/mol): 27.2
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 31
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers:  
Other Oxid. Numbers: