Number of Isotopes: 1
Electron Affinity (kJ/mol): 50
First Ionization Energy (kJ/mol): 580.7
Second Ionization Energy (kJ/mol): 1139
Third Ionization Energy (kJ/mol): 2204
Electronegativity: 1.23
Polarizability (Å3): 23.6
Atomic Volume (cm3/mol): 18.8
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 176
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): 104.1
Common Oxidation Numbers: +3
Other Oxid. Numbers: