Which of the following molecules should exhibit resonance?

Question

Quizplus · Accepted Answer

Only molecule C (SO2) should exhibit resonance. Resonance occurs when a molecule has delocalized electrons, meaning they can move around the molecule. In SO2, the sulfur atom has a double bond with one oxygen atom and a single bond with another oxygen atom. However, the double bond could also be between the sulfur atom and the other oxygen atom. This means that the electrons in the molecule are not localized to a specific bond, but rather can move around between the sulfur and oxygen atoms. This is an example of resonance. The other molecules in the list do not have delocalized electrons and therefore should not exhibit resonance.

Which of the Following Molecules Should Exhibit Resonance