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Which of the following is a pseudohalide...

Which of the following is a pseudohalide?

A

`l_(3)^(-)`

B

`lC l`

C

`lF_(7)`

D

`CN^(-)`

Text Solution

Verified by Experts

The correct Answer is:
D
`CN^(-)` resembles `Cl^(-),Br^(-) and I^(-)` in the following respects (i) it form HCN (ii) the electron deficient species attack on nitrogen as well as carbon, as they have electron rich centre. Hence, `CN^(-)` is a pseudohalide.
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