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Gradual addition of KI solution to Bi(NO...

Gradual addition of `KI` solution to `Bi(NO_3)_(3)` solution initially produces a dark brown precipitate which dissolves in excess of `KI` to give a clear yellow solution. Write chemical equation for the above reactions.

A

`I_2`

B

`KI_3`

C

`Bi(OH)_2`

D

`Bi(OH)(NO_3)_2`

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