Number of Isotopes: 0
Electron Affinity (kJ/mol):  
First Ionization Energy (kJ/mol): 601
Second Ionization Energy (kJ/mol): Not applicable
Third Ionization Energy (kJ/mol): Not applicable
Electronegativity: 1.3
Polarizability (ang3): 22.7
Atomic Volume (cm3/mol): 16.7
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 170
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): 110
Common Oxidation Numbers: +3
Other Oxid. Numbers: +4