# What is the formal charge of the central atom in O_3?

Jun 17, 2016

The ${O}_{3}$ molecule is bent, and displays formal charge separation.
There are $3 \times 6$ valence electrons.
A reasonable Lewis structure would be, ""^(-)O-stackrel(+)O=O, and going from the left oxygen to right, around each oxygen centre there are $7$, $5$, and $6$ electrons respectively. And thus the central oxygen bears a positive charge, and the left most oxygen bears a negative charge. With this formulation, the ozone molecule is still formally neutral. The terminal oxygens are equivalent by resonance.