Most stable oxidation state of iron is

Options

A. `+1`
B. `+4`
C. `+3`
D. `+5`

Answer

C

Explanation

`Fe^(3+)`
`Fe(26) - 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^6`
`Fe^(3+) - 1s^2 2s^2 2p^6 3s^2 3p^6 4s^0 3d^5`