Question:
Which of the following best define the term hyperconjugation?
Which of the following best define the term hyperconjugation?
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Hyperconjugation is also called “no-bond resonance”.
Updated On: Apr 23, 2026
- Transfer of H from a $\sigma_{C-H}$ bond to the $\pi$ system
- Participation of an H-atom on terminal carbon in the electron sharing
- Delocalisation of electron density from a properly oriented $\sigma$-bond into $\pi$-system
- Interaction between a properly aligned lone electron pair with the empty $\pi$-system
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The Correct Option is C
Solution and Explanation
Concept:
Hyperconjugation = $\sigma$ to $\pi$ electron delocalization
Step 1: In hyperconjugation, electrons from $\sigma$(C–H) bond are involved.
Step 2: These electrons delocalize into adjacent $\pi$-system or empty orbital.
Step 3: This leads to stabilization of molecule.
Step 4: Option (C) correctly describes $\sigma \rightarrow \pi$ delocalization.
Conclusion:
Correct definition = Option (C)
Step 1: In hyperconjugation, electrons from $\sigma$(C–H) bond are involved.
Step 2: These electrons delocalize into adjacent $\pi$-system or empty orbital.
Step 3: This leads to stabilization of molecule.
Step 4: Option (C) correctly describes $\sigma \rightarrow \pi$ delocalization.
Conclusion:
Correct definition = Option (C)
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