Number of Isotopes: 6
Electron Affinity (kJ/mol): 194.97
First Ionization Energy (kJ/mol): 940.9
Second Ionization Energy (kJ/mol): 2044.5
Third Ionization Energy (kJ/mol): 2973.7
Electronegativity: 2.55
Polarizability (Å3): 3.8
Atomic Volume (cm3/mol): 18.4
Ionic Radius2- (pm): 184
Ionic Radius1- (pm): No data
Atomic Radius (pm): 119
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers: -2, +2, +4, +6
Other Oxid. Numbers: