| Metal |
Oxidation States |
| Sc |
0, 3 |
| Ti |
0, 2, 3 [not found on earth], 4 [TiO+2] |
| V |
0, 2, 3, 4 [VO+2], 5 [V(OH) ] |
| Cr |
0, 2, 3, 6 [Cr2O ] |
| Mn |
0, 2, 3, 4 [MnO2], 6 [MnO ], 7 [MnO ] |
| Fe |
0, 2, 3, 5 [FeO] |
| Co |
0, 2, 3, 4 [CoO2] |
| Ni |
0, 2, 4 [NiO2], 6 [NiO] |
| Cu |
0, 1, 2, 3 |
| Zn |
0, 2 |
| Sn |
0, 2, 4 |
