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The reaction of nitroprusside anion with...

The reaction of nitroprusside anion with sul- phide ion gives purple colouration due to the formation of

A

The tetranionic complex of iron (II) coordinating to one `NOS^(-)` ion.

B

The dianionic complex of iron (II) coordinating to one `NOS^(-)` ion

C

The trianionic complex of iron (III) coordinating to one `NOS^(-)` ion.

D

The tetranionic complex of iron (III) coordinating to one `NOS^(-)` ion.

Text Solution

Verified by Experts

The correct Answer is:
A
`underset("Sod. Nitroprusside")(Na_(2)S + Na_(2)[Fe(CN)_(5)NO]) to underset("Violet colour")(Na_(4)[Fe(CN)_(5)NOS])`
`[Fe^(+2)((CN)_(5))^(-5) NOS]^(-4) rArr` Tetra anionic complex of iron. (II) co-ordinating to one `NOS^(-)` ion.
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