Which of the following substituents is most likely to deactivate...

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

Options

AMethoxy (-OCH₃) group
BChlorine (-Cl) atom
CAmino (-NH₂) group
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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