# How many resonance structures can be drawn for ozone?

There are 18 valence electrons. This is to be distributed over 3 oxygen centres: $O = {O}^{+} - {O}^{-}$. From left to right, each $O$ atom has 6, 5, and 7 valence electrons, resulting in formal charges of $0$, $+ 1$, and $- 1$, for each atom. VSEPR predicts a bent molecule.