Question

Q.Which compounds undergoes Walden
inversion in SN2 reaction?
(A) CH3CH2Br
(B) CH3-CHD-Br
(C) CH3-Br
(D) C6H5CH2CH2C1

Answer 1

Explanation:

Walden inversion:

an inversion of configuration of one optically active compound into another that may or may not lead to a change in the direction of optical rotation and that may be of either of two general types.

here, only (a) is optically active, and will have Walden inversion.