Question

Given below are two statements:
Statement I : Hyperconjugation is a permanent effect.
Statement II: Hyperconjugation in ethyl cation $(C{H}_3-\stackrel{+}{C{H}_2})$ involves the overlapping of $C_{s{p}^2}-H_{1s}$ bond with empty 2p orbital of other carbon.

Choose the correct option:

• A. Both statement I and statement II are true
• B. Statement I is incorrect but statement II is true
• C. Statement I is corrct but statement II is false
• D. Both statement I and Statement II are false

Answer 1

The correct option is C Statement I is corrct but statement II is false

Hyperconjugation, inductive and mesomeric effect are permanent electronic effect.
In $C{H}_3-\stackrel{\oplus }{C{H}_2}$ hyperconjugation occurs by overlapping of $C_{s{p}^3}-H_{1s}$ bond with empty 2 p orbital of other carbon.

Hence, statement I is correct but statement II is false.
Thus, option (c) is correct.