For Vanadium match the oxidation states with their reducing, oxidizing or stable behavior
| Oxidation state | Stability |
| i) +2 | A) Oxidising |
| ii) +4 | B) Reducing |
| iii) +5 | C) Stable |
i-A, ii-B, iii-C
i-A, ii-C, iii-B
i-B, ii-C, iii-A
i-B, ii-A, iii- C
In a lower oxidation state Vanadium tries to lose electron to attain +4 oxidation state and in a higher oxidation state it gains electrons to attain the +4 oxidation state.