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 refers to the delocalization of electrons in σ-bonds, usually from C-H or C-C bonds adjacent to a positively charged carbon atom (like in carbocations). - Statement 1: "Hyper conjugation is not a permanent effect." This statement is false because hyperconjugation is a stable, delocalized effect that persists as long as the molecule is in the form of the cation or free radical. It contributes to the stabilization of the cation, particularly in 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 true. The number of alkyl groups directly affects the stabilization of carbocations via hyperconjugation. More alkyl groups lead to more electron donation via hyperconjugation, enhancing the stability of the positively charged carbon atom (carbocation). Thus, Statement 1 is false and Statement 2 is true.