Question

The total number of cyclic structural as well as stereoisomers possible for a compound with the molecular formula C₅ H₁₀ is

(A) 7 (B) 9 (C) 12 (D) 13

Answer 1

Correct option  (A) 7 

Explanation:

 a.  C₅ H₁₀ = 1 DU. It can be cyclic and can be alkene.

Therefore, total cyclic and stereoisomers = 7

If it is alkene: 

Other alkene structures :

Total Number of cyclic, acyclic, and stereoisomers is 13. However, in the problem only cyclic structural and stereoisomers have been asked. So the total number of isomers would be seven.