`[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 three 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): rarr : overset(+)(N) = underset(..)(O) : + e^(-)),(Fe^(2+)+e^(-) rarr Fe^(+)):}`

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