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S(N)2 mechanism proceeds through formati...

`S_(N)2` mechanism proceeds through formation of `:`

A

Carbonium ion

B

Transition state

C

Free radical

D

Carbanion

Text Solution

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The correct Answer is:
2

`S_(N)2` mechanism is a single step concerted process and proceed through transitoin state formation.
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S_(N)1 // S_(N)2 proceeds through the formation of a carbocation.

S_(N)1 // S_(N)2 proceeds through the formation of a carbocation.

Assertion (A) Hydrolysis of (-)-2-bromooctane proceeds with inversion of configuration Reason (R) This reaction proceeds through the formation of a carbocation.

Alkylhalides have polar C-X bond and undergo nucleophilic substitution reactions. These give a variety of products with nucleophiles such as -OH, -OR, -NH_(2), -CN, -NC, -NO_(2), -ONO, RCOO^(-) , etc. They undergo mainly two types of nucleophilic substitution reactions, S_(N)1 and S_(N)2 . S_(N)1 reactions are two steps reactions which proceed through the formation of carbocations while S_(N)2 reactions are one step reaction which proceeds through the formation of transition state. The stability of carbocation and transition state determine the reactivity of alkyl halides. Which out of S_(N)1 or S_(N)2 results into inversion of configuration?

Alkylhalides have polar C-X bond and undergo nucleophilic substitution reactions. These give a variety of products with nucleophiles such as -OH, -OR, -NH_(2), -CN, -NC, -NO_(2), -ONO, RCOO^(-) , etc. They undergo mainly two types of nucleophilic substitution reactions, S_(N)1 and S_(N)2 . S_(N)1 reactions are two steps reactions which proceed through the formation of carbocations while S_(N)2 reactions are one step reaction which proceeds through the formation of transition state. The stability of carbocation and transition state determine the reactivity of alkyl halides. Arrange the following in the increasing order of reactivity towards S_(N)2 reaction:

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