which-of-the-following-structures-with-a-tetrahedral-carbon-atom-does-not-have-c

Question

Which of the following structures does not have constitutional isomers?

Structures A, B, C, D showing different constitutional isomers for the question.

Accepted Answer

Structure A: a tetrahedral carbon with four hydrogen atoms.

Answer

Structure B: a carbon chain with a double bond and an ethyl group.

Answer

Structure C: a carbon chain with a double bond and a methyl group.

Answer

Structure D: a carbon chain with two chlorine substituents and a double bond.