Question

How many resonance structures can be drawn for ozone, O3?

Answer 1

`2`

Explanation:

These are the two resonance structures for `O_3`.

When determining if resonance structures do indeed exist, think about whether you can switch things around and still have the same charge. In this case, the resonance structures simply look like a mirror image of one another, so the `pi` bond is constantly alternating between either oxygen atom.