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

1 Answer
Jun 17, 2016

Answer:

The central oxygen atom of ozone bears a formal positive charge.

Explanation:

The #O_3# molecule is bent, and displays formal charge separation.

There are #3xx6# 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.