Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : undergoes S_ N 2 reaction faster than Reason (R) : Iodine is a better leaving group because of

Correct answer: A. Both A and R are true and R is the correct explanation of A . Rate of S_ N 2 Leaving tendency of leaving group. Iodine is better L.G. than chlorine due to its bigger size.

NEET 2025

Exam: NEET
Year: 2025
Subject: Chemistry
Chapter: Haloalkanes and Haloarenes

NEET 2025 · Chemistry · Haloalkanes and Haloarenes

Given below are two statements : one is labelled as Assertion (A)...

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) :

undergoes

\mathrm{S}_{\mathrm{N}} 2

reaction faster than Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion

Reason (R) : Iodine is a better leaving group because of its large size. In the light of the above statements, choose the correct answer from the options given below :

Options

ABoth $\mathbf{A}$ and $\mathbf{R}$ are true and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$ .
BBoth $\mathbf{A}$ and $\mathbf{R}$ are true but $\mathbf{R}$ is not the correct explanation of $\mathbf{A}$ .
C $\mathbf{A}$ is true but $\mathbf{R}$ is false
D $\mathbf{A}$ is false but $\mathbf{R}$ is true

Correct answer

A. Both $\mathbf{A}$ and $\mathbf{R}$ are true and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$ .

Step-by-step solution

Rate of

\mathrm{S}_{\mathrm{N}} 2 \propto

Leaving tendency of leaving group. Iodine is better L.G. than chlorine due to its bigger size.

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