Match the statements given in Column I with the oxidation states given in Column II.
| Column I | Column II |
| (i) Oxidation state of |
(a) +2 |
| (ii) Most stable oxidation state of |
(b) +3 |
| (iii) Most stable oxidation state of |
(c) +4 |
| (iv) Characteristic oxidation state of lanthanoids is | (d) +5 |
| (e) +7 |