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Question: Answered & Verified by Expert
In the case of aryl halides, what makes halogens (e.g., chlorine) ortho and para directing groups in electrophilic aromatic substitution reactions?
ChemistryHydrocarbonsNEET
Options:
  • A Their inductive effect
  • B Their -I effect
  • C Their -M effect
  • D Their resonance effect
Solution:
2611 Upvotes Verified Answer
The correct answer is: Their resonance effect
Aryl halides like chlorobenzene have halogens as ortho and para directing groups due to the resonance effect. Although halogens exhibit a -I effect, the resonance effect increases electron density at the ortho and para positions, making them directing groups.

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