Why is the peptide bond planar?
A) Bulky side chains prevent free rotation around the bond.
B) It exhibits partial double-bond character, preventing rotation.
C) Hydrogen bonding between the NH and C=O groups limits movement.
D) None of the above.
E) All of the above.

Question

Quizplus · Accepted Answer

The peptide bond exhibits partial double-bond character, which restricts free rotation around the bond. This is due to the resonance stabilization of the peptide bond, which results in a planar geometry. The other options may contribute to the stability of the peptide bond but are not directly responsible for its planarity.

Why Is the Peptide Bond Planar