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The correct increasing order of the reac...

The correct increasing order of the reactivity of halides for `S_(N)` 1 reaction is `:`

A

`CH_3CH_2X lt (CH_3)_2CHX lt CH_2=CHCH_2X lt PhCH_2X`

B

`(CH_3)_2CHX lt CH_3CH_2X lt CH_2=CHCH_2X lt PhCH_2X`

C

`PhCH_2X lt (CH_3)_2CHX lt CH_3CH_2X lt CH_2=CHCH_2X`

D

`CH_2=CHCH_2X lt PhCH_2X lt (CH_3)_2CHX lt CH_3CH_2X`

Text Solution

Verified by Experts

The correct Answer is:
A
Because Benzyl carbonium and phenyl carbonium ion are stabilised by resonance so they have more reactivity for `SN^1` .
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