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Arrange the following bromides in the or...

Arrange the following bromides in the order of reactivity in undergoing `S_(N)I` reaction

A

`i gt iii gt ii gt iv`

B

`iv gt ii gt iii gt i`

C

`i gt ii gt iii gt iv`

D

`ii gt iv gt iii gt i`

Text Solution

Verified by Experts

The correct Answer is:
A
As stability of carbocatio is in order `rarr 3^(@) gt 20 gt 1^(@)`, so the order of `S_(N)1` reaction in alkyl halide.
(i) `3^(@) gt 2^(@) gt 1^(@)`
So, the correct order is `iii gt ii gt iv`
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