Sodium nitroprusside reacts with sulphide ion to give a purple colour due to the formation of

Options

A. `[Fe(CN)_(5)NO]^(3-)`
B. `[Fe(NO)_(5)CN]^(-)`
C. `[Fe(CN)_(5)NOS]^(4-)`
D. `[Fe(CN)_(5)NOS]^(3-)`

Answer

C

Explanation

`underset("Sodium nitroprusside")([Fe(CN)_(5)NO]^(2-))+S^(2-)rarrunderset("Purple complex")([Fe(CN)_(5)NOS]^(4-))`