The complex `[Fe(H_(2)O)_(5)NO]^(2+)` is formed in the 'brown ring test' for nitrates. Choose the incorrect statement for the complex.

Options

A. Its magnetic moment is approximately 3.9 BM
B. The oxidation state of iron is `+1`
C. The hybridization of central metal ion is `sp^(3)d^(2)`
D. The brown colour of the ring is due to `d-d` transition

Answer

D

Explanation

`[overset(+1)(Fe) (H_(2)O)_(5) overset(+)(N)O]^(2+)`
`sp^(3) d^(2) , d^(7)` config.

3 unpaired `e^(-)`