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

Explanation

`Cr^(2+)` is a stronger reducing agent.
`Cr^(2+) to Cr^(3+), d^(4)` changes to `d^(3)`
`Fe^(2+) to, d^(6)` changes to `d^(5)`
In a medium, (e.g. water), `d^(3)` is more stable in comparison to `d^(5)`.