Question

Statement 1: Hyper conjugation is not a permanent effect Statement 2: In general, greater the number of Alkyl groups attached to a positively charged carbon atom, greater is the Hyper conjugation interaction and stabilization of the cation.

• A. Statement 1 and Statement 2 are correct
• B. Statement 1 and Statement 2 are incorrect
• C. Statement 1 is true and Statement 2 is false
• D. Statement 1 is false and Statement 2 is true

Hint:

Hyperconjugation is an important factor in the stability of carbocations and radicals. More alkyl groups generally lead to more stabilization due to greater electron donation.

Answer 1

The Correct Option is D

Hyperconjugation describes the electron delocalization from adjacent C-H or C-C σ-bonds into an adjacent positively charged carbon atom (e.g., in carbocations). - Statement 1: "Hyper conjugation is not a permanent effect." This statement is incorrect. Hyperconjugation is a stable, delocalized phenomenon that endures as long as the molecule exists as a cation or free radical. It stabilizes the cation, especially carbocations. - Statement 2: "In general, greater the number of Alkyl groups attached to a positively charged carbon atom, greater is the Hyper conjugation interaction and stabilization of the cation." This statement is accurate. The quantity of alkyl groups attached to a positively charged carbon atom directly influences carbocation stability through hyperconjugation. An increased number of alkyl groups results in greater electron donation via hyperconjugation, thereby reinforcing the stability of the carbocation. Consequently, Statement 1 is false, and Statement 2 is true.