Hyperconjugation is also known as ____________?
Correct answer: B. no bond reasonable
- A. Reasonable
- B. no bond reasonable
- C. Inductive effect
- D. Electromeric effect
Explanation
Hyperconjugation is delocalization of electrons from a sigma C-H or C-C bond into an adjacent empty or pi-antibonding orbital. It is therefore called no-bond resonance because one contributing form is represented without a normal bond. Option c is a likely mistake because both effects involve electron displacement, but hyperconjugation is not the inductive effect.
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About Alkenes
Alkenes are unsaturated hydrocarbons containing a carbon-carbon double bond with sigma and pi components and restricted rotation. Their reactions include electrophilic addition of hydrogen, halogens, hydrogen halides and water, with Markovnikov orientation, oxidation, combustion and polymerisation, while their preparation commonly involves elimination from alkyl halides or alcohols.
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