Number of Isotopes: 1
Electron Affinity (kJ/mol): 63.8
First Ionization Energy (kJ/mol): 758.4
Second Ionization Energy (kJ/mol): 1646
Third Ionization Energy (kJ/mol): 3232.2
Electronegativity: 1.88
Polarizability (Å3): 7.5
Atomic Volume (cm3/mol): 6.6
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 125
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): 83.8
Ionic Radius3+ (pm): 71.8
Common Oxidation Numbers: +2, +3
Other Oxid. Numbers: -1, +1, +4, +5