Number of Isotopes:
7
Electron Affinity (kJ/mol):
50
First Ionization Energy (kJ/mol):
571.9
Second Ionization Energy (kJ/mol):
1126
Third Ionization Energy (kJ/mol):
2200
Electronegativity:
1.2
Polarizability (Å
3
):
24.5
Atomic Volume (cm
3
/mol):
19
Ionic Radius
2-
(pm):
No data
Ionic Radius
1-
(pm):
No data
Atomic Radius (pm):
178
Ionic Radius
1+
(pm):
No data
Ionic Radius
2+
(pm):
121
Ionic Radius
3+
(pm):
105.2
Common Oxidation Numbers:
+3
Other Oxid. Numbers:
+2