Question

Calculate the formal charge on the central oxygen atom in $O_3$.

• A. 0.0
• B. 1
• C. -1
• D. 0.5

Answer 1

The correct option is B 1


Formal charge $\left(FC\right)$ = $V-L-\frac{B}{2}$
Where,
$V$ = Total number of valence electrons in the atom.
$L$ = Total number of non bonding (lone pair) electrons in the atom.
$B$ = Total number of bonding (shared) electrons in that particular atom.

Hence, the formal charge on the central $O$ atom in $O_3$ = $6-2-\frac{1}{2}\times 6=$ $+1$