In chlorobenzene, all the six C-C bonds have the same length because of

Options

A. inductive effect
B. Resonance
C. tautomerism
D. sp^(2)-hybridisation

Answer

D

Explanation

Each `sp^(2)`-hybridised carbon atom has a p-orbital, these six p-orbitals overlap to form a -pi molecular orbital in which the electrons are completely delocalized. Due to delocalization of these pi-electrons, all the six C-C bonds are equal`.