Which is a stronger reducing agent `Cr^(2+)` or `Fe^(2+)` and why?

Explanation

`Cr^(2+)` is stronger reducing agent than `Fe^(2+)` Reason: `d^(4) to d^(3)` occurs in case of `Cr^(2+)` to `Cr^(3+)` But `d^(6) to d^(5)` occurs in case of `Fe^(2+)` to `Fe^(3+)`
In a medium (like water) `d^(3)` is more stable as compared to `de^(5)` (See CFSE)