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In which of the following molecules, all atoms are coplanar?

41 2016 Phase II Organic Chemistry - Some Basic Principles and Techniques Hybridisation and planarity Medium

In which of the following molecules, all atoms are coplanar?

A -

B -

C -

D -

Explanation

All-$sp^2$ carbon framework allows coplanarity.

Detailed Solution

In biphenyl all carbons are $sp^2$ hybridised, so all atoms are coplanar.

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