Number of Isotopes: 1
Electron Affinity (kJ/mol): 180
First Ionization Energy (kJ/mol): 812
Second Ionization Energy (kJ/mol): Not applicable
Third Ionization Energy (kJ/mol): Not applicable
Electronegativity: 2
Polarizability (Å3): 6.8
Atomic Volume (cm3/mol): 22.9
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 168
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers: -2, +2, +4
Other Oxid. Numbers: +6