Assertion : When NO reacts with `FeSO_4`, a brown coloured complex is formed.
Reason : In the complex, the coordination number of Fe is +6.

Options

A. If both (A) and (R) are correct and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
C. If (A) is correct, but(R) is incorrect.
D. If both (A) and (R) are.incorrect.

Answer

B

Explanation

The colour of the complex formed, `[Fe(H_2O)_5NO]^(2+)` is due to charge transfer (transfer of odd`e^(-)` on N to Fe, changing NO to `NO^(+)` and `Fe^(2+)` to `Fe^(+)`).