`[Fe(H_(2)O)_(5)NO]^(2+)` is a complex formed during the brown ring test for `NO_(3)^(-)` ion. In this complex.

Options

A. there are there unpaired electrons so that its magnetic moment is 3.87 B.M.
B. NO transfers its electron to `Fe^(2+)` so that iron exists as Fe (I) and NO as `NO^(+)`
C. the colour is because of charge transfer
D. all of the above statements are correct

Answer

D

Explanation

`:overset(*)N=underset(* *)O:to:overset(+)N=underset(* *)O:+e^(-)`
`Fe^(2+)e^(-)toFe^(+)`

`:.` Magnetic moment of `Fe^(+)=sqrt(n(n+2))BM`
`=sqrt(3xx5)BM=3.87BM`
All statements are correct.