Ferric ion forms a Prussian blue precipi...

Ferric ion forms a Prussian blue precipitate due to the formation of

A

`K_(4)[Fe(CN)_(6)]`

B

`K_(3)[Fe(CN)_(6)]`

C

`Fe(CNS)_(3)`

D

`Fe_(4)[Fe(CN)_(6)]_(3)`

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In the Lassaigne's test, prussian blue colour is obtained due to formation of (1) Na_(4)[Fe(CN)_(6)] (2) Fe_(4)[Fe(CN)_(6)]_(3) (3) Fe_(2)[Fe(CN)_(6)] (4) Fe_(3)[Fe(CN)_(6)]_(4)

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