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The deep colour produced when iodine is ...

The deep colour produced when iodine is dissolved in a solution of potassium iodide is caused by the presence of

A

`I^(+)`

B

`I^(-)`

C

`I_(3)^(-)`

D

`I_(2)^(-)`

Text Solution

Verified by Experts

The correct Answer is:
C
`I_(2)` is more soluble in 10% Ag KI solution this is due to the formation of a complex tri-Iodide ion `I_(3)^(-)` is called poly halide. `KI + I_(2) rarr KI_(3)^(-)`
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