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In S(N)2 reactions, the correct order of...

In `S_(N)2` reactions, the correct order of reactivity for the following compounds :
`CH_(3)Cl,CH_(3)CH_(2)Cl,(CH_(3))_(2)CHCland(CH_(3))_(3)C Cl` is :

A

`CH_(3)Clgt(CH_(3))_(2)CHClgtCH_(3)CH_(2)Clgt(CH_(3))_(3)C Cl`

B

`CH_(3)ClgtCH_(3)CH_(2)Clgt(CH_(3))_(2)CHClgt(CH_(3))_(3)C Cl`

C

`CH_(3)CH_(2)ClgtCH_(3)Clgt(CH_(3))_(2)CHClgt(CH_(3))_(3)C Cl`

D

`(CH_(3))_(2)CHClgtCH_(3)CH_(2)ClgtCH_(3)Clgt(CH_(3))_(3)C Cl`

Text Solution

Verified by Experts

The correct Answer is:
B
Rate of `S_(N)2` reaction depends on stearic crowding of alkyl halide. Therefore, the order of reactivity is :
`CH_(3)ClgtCH_(3)CH_(2)Clgt(CH_(3))_(2)CHClgt(CH_(3))_(3)C Cl`
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