Electromeric effect is ____________?
Correct answer: C. temporary effect
- A. Permanent effect
- B. Operate due to electronegativity difference
- C. temporary effect
- D. None of the above
Explanation
The electromeric effect is a complete temporary transfer of the pi-electron pair of a multiple bond towards one atom when an attacking reagent approaches. It disappears when the reagent is removed, so it is a temporary effect. Students often choose a by confusing it with the permanent 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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