Question

The canonical or resonating structures of a molecule required to describe the structure of a molecule follow which of the following rules?

• A. The relative position of all atoms can differ
• B. The same number of unpaired and paired electrons in all structures
• C. The energy of each structure is different
• D. Like charges are present on adjacent atoms

Answer 1

The correct option is B The same number of unpaired and paired electrons in all structures

All resonance structures must have the same number of valence electrons.

Electrons are not created or destroyed. You must have as many electrons in the structures that you create as there were in the starting structure.

So the correct option is $B$.

The same number of unpaired and paired electrons In all structures.