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NEETChemistryHydrocarbons

Which of the following substituents is most likely to deactivate the benzene ring in electrophilic aromatic substitution?

Options

  1. AMethoxy (-OCH 3 ) group
  2. BChlorine (-Cl) atom
  3. CAmino (-NH 2 ) group
  4. DHydroxyl (-OH) group

Correct answer

B. Chlorine (-Cl) atom

Step-by-step solution

Chlorine (-Cl) is a deactivating group due to its strong -I effect, which reduces electron density on the benzene ring, making it less reactive in electrophilic aromatic substitution reactions.

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