Which of the following statements about mesomeric effect is true?

Practice Questions

Q1
Which of the following statements about mesomeric effect is true?
  1. It involves only sigma bonds.
  2. It is a permanent effect.
  3. It is weaker than the inductive effect.
  4. It does not involve resonance structures.

Questions & Step-by-Step Solutions

Which of the following statements about mesomeric effect is true?
Correct Answer: The mesomeric effect is a permanent effect that involves the delocalization of electrons through pi bonds and resonance structures.
  • Step 1: Understand that the mesomeric effect is related to how electrons can move around in a molecule.
  • Step 2: Recognize that this movement of electrons happens through structures called resonance structures.
  • Step 3: Remember that the mesomeric effect is a permanent feature of certain molecules, meaning it doesn't change.
  • Step 4: Know that the delocalization of electrons occurs specifically through pi bonds, which are found in double bonds.
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