Chemistry - STEREO ISOMERISM Question with Solution | TestHub

Four structures are optically active: (i), (iv), (vi), and (vii).

(viii) is a 1,3-disubstituted cyclobutane. The two ring paths at each substituted vertex are equivalent.

It has a symmetry plane through those vertices and is achiral.

The remaining structures (ii), (iii), and (v) are also achiral.