Maximum number of coplanar atoms

The only case where all atoms are not coplanar is saturated carbon atoms. A saturated carbon atom is a carbon atom that has only single bonds between other atoms.

Procedure

  1. Locate saturated carbon atoms
  2. Cut out 2 bonds in the principle of maximizing the number of atoms remaining

Exercise

How many maximum number of atoms are coplanar in

  1. Toluene
  2. Bisphenol A

Extra: Asymmetric carbon

some with branch chains