1.

The correct statement regarding the following compounds is

Answer»

all three compounds are chiral
only I and II are chiral
I and III are diastereomers
only I and III are chiral.

Solution :Look at the structures and orientation of GROUPS in 3-D space :

It has no PLANE of symmetry (look at the orientation of -`-CH_(3)` groups), no AXIS of symmetry (rotation through any axis does not generate the indistinguishable structure) or no point of symmctry (which is possible if one side -OH group is represcnted by OH and another side by - OH. Same also for hydrogen.) So, (1) is chiral.

due to the presence of a centre of symmetry, structure (11)is achiral.

Again in this structure, there is no symmetry clement. So, (III) is chiral.


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