If a molecule contains one carbon atom carrying four different groups it will not have a plane of symmetry and must therefore be chiral. A carbon atom carrying four different groups is a steregoenic or chiral centre. A structure with a plane of symmetry is achiral and superimposable on its mirror image and cannot exist as two enantiomer. A structure without a plane of symmetry is chiral and not superimposable on its mirror image and can exist as two enantiomer.

Relation between (a) & (b) is

Options

A. Enantiomer
B. Diastereomer
C. Identical
D. Structural isomer

Answer

B