NEET2025Chemistry-Organic Chemistry
NEET 2025 Chemistry Nucleophilic Substitution Reactions Assertion Reason Question
Type: Assertion Reason-conceptual-Medium-Class 12
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): I undergoes Sₙ2 reaction faster than 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:

A
Both A and R are true and R is the correct explanation of A
B
Both A and R are true but R is not the correct explanation of A
C
A is true but R is false
D
A is false but R is true
Correct Answer
Option A
Detailed Explanation
Iodine is a better leaving group than chlorine due to its larger size and weaker bond with carbon, making it more favorable for Sₙ2 reactions. Both statements are true, and R correctly explains A.
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