Question

Which of the following is the correct reason for the addition reactions on alkenes?

• A. loosely held $\pi$-electrons
• B. tightly held $\pi$-electrons
• C. loosely held $\sigma$-electrons
• D. tightly held $\sigma$-electrons

Answer 1

Answer: (A)

Alkenes are the rich source of loosely held pi $(\pi)$ electrons, due to which they show addition reactions in which the electrophiles add on to the $C - C$ double bond to form an addition product.