NEETChemistryGeneral Organic Chemistry
During an organic reaction, a temporary effect involving the complete transfer of a shared pair of -electrons to one of the atoms joined by a multiple bond operates in the opposite direction to a permanent effect involving the fractional polarisation of -bonds. Identify the two effects and the one that predominates.
Options
- ATemporary effect is the resonance effect, permanent effect is the inductive effect; the resonance effect predo
- BTemporary effect is the electromeric effect, permanent effect is the inductive effect; the electromeric effect
- CTemporary effect is the electromeric effect, permanent effect is the inductive effect; the inductive effect pr
- DTemporary effect is the electromeric effect, permanent effect is hyperconjugation; the electromeric effect pre
Correct answer
B. Temporary effect is the electromeric effect, permanent effect is the inductive effect; the electromeric effect
Step-by-step solution
The temporary effect involving the complete transfer of a shared pair of -electrons to one of the atoms joined by a multiple bond at the requirement of an attacking reagent is the electromeric effect. The permanent effect involving the fractional polarisation of -bonds due to a difference in electronegativity is the inductive effect. According to NCERT, when the inductive and electromeric effects operate in opposite directions, the temporary electromeric effect predominates over the permanent inductive effect. Answ