Question

Question 18: And Explain when allenes doesn't show optical ismoerism.

Answer 1

Explanation:

Allenes :

are organic compounds in which one carbon atom has double bonds with each of its two adjacent carbon centres.[1] Allenes are classified as cumulated dienes. The parent compound of this class is propadiene, which is itself also called allene. Compounds with an allene-type structure but with more than three carbon atoms are members of a larger class of compounds called cumulenes with X=C=Y bonding. Unlike polyenes, the two double bonds do not exhibit resonance.