Question

Phenol is least reactive for aromatic nucleophilic substitution because

• A. Carbon-oxygen bond has some double bond character due to resonance
• B. Oxygen is present on $s{p}^2$ -hybrid carbon which makes carbon-oxygen bond stronger
• C. Oxygen is highly electronegative which decreases bond length between carbon and oxygen
• D. All are correct

Answer 1

Answer: (D)

Phenol is least reactive for aromatic nucleophilic substitution because $C-O$ bond get shorter and stronger due to resonance stabilization so removal of $-OH$ group becomes tough.