Number of Isotopes: 4
Electron Affinity (kJ/mol): 200.4144
First Ionization Energy (kJ/mol): 999.6
Second Ionization Energy (kJ/mol): 2251
Third Ionization Energy (kJ/mol): 3360.6
Electronegativity: 2.58
Polarizability (Å3): 2.9
Atomic Volume (cm3/mol): 15.5
Ionic Radius2- (pm): 170
Ionic Radius1- (pm): No data
Atomic Radius (pm): 103
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: -1, +1, +3, +5