Question

Alkynes are less reactive than alkenes towards addition of $B{r}_2$ because.

• A.
• B.
• C. Both are equally stable
• D. Original statement is incorrect

Answer 1

The correct option is A

Alkenes are more reactive than alkynes towards electrophilic addition reaction.
This is due to formation of highly strained bridged carbocation (3 membered ring with a double bond). Also, the C atom in alkyne is more electronegative (more s character) due to which, it tightly holds $\pi$ electrons. Hence, the correct answer will be option (a).