Chemistry - STEREO ISOMERISM Question with Solution | TestHub

All three are hexane-3,4-diol. (a) is the meso form (3R,4S): an internal mirror plane makes it achiral. (b) = (3R,4R) and (c) = (3S,4S) are non-superimposable mirror images: enantiomers. (a) differs from (b) and from (c) at exactly one centre: diastereomers.

Ans. (b, c) enantiomers; (a, b) and (c, a) diastereomers.