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  4. Which one of the following halogen compounds is difficult to be hydrolysed by SNI mechanism?

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Q. Which one of the following halogen compounds is difficult to be hydrolysed by SNI mechanism?

KEAMKEAM 2013

Solution:

$C - Cl$ bond in chloro benzene is stable due to delocalisation of electrons by resonance. Also, $(C-Cl) $ bond posses a double bond character due to which it is very difficult to hydrolysed it by $S _{ N } 1$ mechanism.

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