Chemistry Question on Chemical bonding and molecular structure

Question

The formal charge on central oxygen atom in ozone is

Answer 1

Solution

(number of valence electron(s) in the neutral atom) $-1 / 2$ (number of valence electron(s) in the covalent bond)-(number of electrons in lone pair) $6-1 / 2 \times 6-2=+1$ Formal charge on the central oxygen i.e. oxygen $(1)$ is $+1$ .