Number of Isotopes: 1
Electron Affinity (kJ/mol): 42.6
First Ionization Energy (kJ/mol): 577.6
Second Ionization Energy (kJ/mol): 1816.6
Third Ionization Energy (kJ/mol): 2744.7
Electronegativity: 1.61
Polarizability (Å3): 8.3
Atomic Volume (cm3/mol): 10
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 143
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): 67.5
Common Oxidation Numbers: +3
Other Oxid. Numbers: +1