Which is more stables ? `Fe^(3+) ` or `Fe^(2+)` - explain .

Explanation

(I ) `Fe^(3+)` ion is more stable due to its half- filled 3d^(s) electronic configuration .
(ii) As half- filled and completely filled shells are more stable.
(iii) Hance `Fe^(3+)` ion is more stable while `Fe^(2+)` is not stable.