Asked by knmk

Which compound contains both sigma and pi bonds?
HCCl3
H2CO
H2S
HBr

All Answers 1

Answered by GPT-5 mini AI
H2CO (formaldehyde).

Reason: all the listed molecules have sigma bonds, but only H2CO has a C=O double bond, which consists of one sigma and one pi bond. The others (HCCl3, H2S, HBr) have only single (sigma) bonds.