# What is the Lewis structure of ozone (O_3)?

Mar 4, 2017

The typical Lewis structure of ozone depicts formal charge separation.......

#### Explanation:

Simple VESPER requires that we distribute $3 \times 6 = 18$ $\text{valence electrons}$ across 3 centres:

$O = {O}^{+} - {O}^{-}$

From the left, ${O}_{1}$, has TWO lone pairs; ${O}_{2}$ has ONE lone pairs; and ${O}_{3}$ has THREE lone pairs. And thus the formal charge of each oxygen atom ($8 {e}^{-} , 7 {e}^{-} , 9 {e}^{-}$) is $0 , + 1 , - 1$ respectively.

Because there are THREE regions of electron density around the central oxygen atom, the $\angle O - O - O = {120}^{\circ}$ to a first approx., and ${117}^{\circ}$ by actual measurement.