Number of Isotopes: 3
Electron Affinity (kJ/mol):  
First Ionization Energy (kJ/mol): 1520.5
Second Ionization Energy (kJ/mol): 2665.8
Third Ionization Energy (kJ/mol): 3930.8
Electronegativity: Not defined (Pauling Scale)
Polarizability (Å3): 1.586
Atomic Volume (cm3/mol): 28.5
Ionic Radius2- (pm): No data
Ionic Radius1- (pm): No data
Atomic Radius (pm): 98
Ionic Radius1+ (pm): No data
Ionic Radius2+ (pm): No data
Ionic Radius3+ (pm): No data
Common Oxidation Numbers:  
Other Oxid. Numbers: