Which of the following statements regarding CO group is not correct?

Options

A. The carbon atom of CO group in aldehydes is `sp^2` hybridized
B. The carbon atom of CO group in the transition state formed during the addition reaction across the CO group is `sp^3` hybridized
C. The aryl group in aromatic aldehydes speeds up the addition reaction across the CO group
D. An aryl group stabilises an aldehyde more than the transition state

Answer

C

Explanation

Aryl group lowers the speed of addition reaction across the C=O group due to the stabilization of the reactant more than the transition state via resonance effect.