Number of Isotopes: 6
Electron Affinity (kJ/mol):  
First Ionization Energy (kJ/mol): 1350.7
Second Ionization Energy (kJ/mol): 2350.3
Third Ionization Energy (kJ/mol): 3565.1
Electronegativity: 3
Polarizability (Å3): 2.5
Atomic Volume (cm3/mol): 38.9
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 112
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers: +2
Other Oxid. Numbers: