Question

In electrophilic aromatic substitution reactions of chlorobenzene, the ortho/para-directing ability of chlorine is due to its _______.

• A. positive inductive effect $(+I)$
• B. negative inductive effect $(-I)$
• C. positive resonance effect $(+R)$
• D. negative resonance effect $(-R)$

Answer 1

The correct option is C positive resonance effect $(+R)$

In electrophilic aromatic substitution reactions of chlorobenzene, the $ortho/para$ ability of chlorine is due to its positive resonance effect ($+R$).