Number of Isotopes: 2
Electron Affinity (kJ/mol): 349
First Ionization Energy (kJ/mol): 1251.1
Second Ionization Energy (kJ/mol): 2297.3
Third Ionization Energy (kJ/mol): 3821.8
Electronegativity: 3.16
Polarizability (Å3): 2.2
Atomic Volume (cm3/mol): 21.4
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): 167
Atomic Radius (pm): 100
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers: -1, +1, +3, +5, +7
Other Oxid. Numbers: +2, +4, +6