Multiple choice

The process of overlap of one p-orbital with another p orbital across an intervening sigma bond is known as

  1. conjugation

  2. resonance

  3. hyperconjugation

  4. cross-conjugation
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A Correct answer
Explanation

Conjugation is the overlap of one p-orbital with another across an intervening sigma bond (in larger atoms d-orbitals can be involved). A conjugated system has a region of overlapping p-orbitals, bridging the interjacent single bonds. They allow a delocalization of pi electrons across all the adjacent aligned p-orbitals.

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