Q. An $S_{N}$2 reaction at an asymmetric carbon of a compound always gives

A) A mixture of diastereomers
B) A single stereoisomer
C) An enantiomer of the substrate
D) A product with opposite optical rotation
Explanation

(b)
In $S_{N}2$ reactions, the nucleophile attaches itself from the direction opposite to that of the nucleophile already present in the second step, the previous nucleophile is removed and a single stereoisomer is obtained

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.