Are the structures in each set valid contributing structures

Key concepts

Resonance

A theory that many molecules are best described as a hybrid of several Lewis structures.

Contributing structures

Representations of a molecule that differs only in the distribution of valence electrons.

Individual Lewis structures are called contributing structures. They are also sometimes referred to as resonance structures or resonance contributors.

Step 1 of 5

We have to find whether  the structures in each set are valid contributing structures.

Contributing structures are the different structures that make up resonance.

Structures prefer to have filled valence shells, the maximum number of covalent bonds, least amount and separation of charges, and the negative charge on the more electronegative atom.