Question

In aldehydes and ketones, carbonyl carbon shows _______ hybridisation.

• A. $sp$
• B. ${sp}^3$
• C. ${sp}^2$
• D. ${sp}^{3}d$

Answer 1

The correct option is C ${sp}^2$

The carbonyl carbon in aldehydes and ketones forms $s{p}^2$ hybridization, as the Carbon and the oxygen atoms form a sigma bond in the molecule by overlapping the two $s{p}^2$ hybrid orbitals. The pi bond between the carbon and oxygen is the 2p-2p overlap.