Resonance Structures Are Contributing Forms
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
Every resonance structure for one molecule contributes to a single averaged real structure, with bond lengths intermediate between the drawn extremes.
Show
Ozone's two oxygen-oxygen bonds measure identical in length, both intermediate between a single and a double bond.
Watch for
No resonance structure by itself is the molecule's true structure; each is only one contributing sketch toward the average.