Question

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

Answer 1

Correct Answer - In Comparison to `Fe^(2+)` , `Cr^(2+)` is a stronger reducing agent because in formation of `Cr^(3+)` from `Cr^(2+)` changes is from `d^(4)tod^(3)..` In `d^(3)` electronic configuration `t_(20)` orbitals are half filled . But in `Fe^(2+)` to `Fe^(3+)` Changes is `d^(6)` to d^(5) in medium like water `d^(6)` is more stable than `d^(5)` .