The stability of ferric ion is due to

Options

A. Half- filled f-orbitals
B. half-filled d-orbitals
C. completely filled f-orbitals
D. completely filled d-orbitals

Answer

B

Explanation

`Fe^(3+)` ion has the following configuration .
`Fe^(3+)=1s^(2),2s^(2),2p^(6),3s^(2),3p^(6)3d^(5)`
Thus, ferric ion is quite stable due to half-filled d-orbital `(3d^(5))`.