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Chemistry · PYQ NEET UG 2025

हिन्दी

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : \( \text{I} \) undergoes \( \text{S}_\text{N}2 \) reaction faster than \( \text{Cl} \). 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 :

  1. A
    Both A and R are true and R is the correct explanation of A
  2. B
    Both A and R are true but R is not the correct explanation of A
  3. C
    A is true but R is false
  4. D
    A is false but R is true
View Answer & Solution

Correct answer · Option A

Both A and R are true and R is the correct explanation of A

Explanation

Iodide ion is a very good leaving group due to its large size and weak C-I bond, making it undergo nucleophilic substitution faster.
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