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When Cu^(2+) ion is treated with KI,a wh...

When `Cu^(2+)` ion is treated with `KI`,a white precipitate, `X` appears in solution.The solution is titrated with sodium thiosphate,the compound `Y` is formed. `X` and `Y` respectively are

A

`X=Cu l_(2),Y=Na_(2)S_(2)O_(3)`

B

`X=Cu_(2),Y=Na_(2)S_(4)O_(6)`

C

`X=Cu_(2)I_(2) ,Y=Na_2S_(4)O_(6)`

D

`X=Cu_(2)I_2, Y=Na_(2)S_(4)O_(5)`

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The correct Answer is:
C
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