Chemistry - CHEMICAL BONDING Question with Solution | TestHub

The formal charge formula is: $FormalCharge(FC)=Valence{e}^{-}-Lonepair{e}^{-}-\frac{1}{2}(Bonding{e}^{-})$.

Oxygen-1 (double-bonded): Contains 6 valence, 4 lone-pair, and 4 bonding electrons $\to FC=6-4-\frac{4}{2}=0$.

Oxygen-2 (central atom): Contains 6 valence, 2 lone-pair, and 6 bonding electrons $\to FC=6-2-\frac{6}{2}=+1$.

Oxygen-3 (single-bonded): Contains 6 valence, 6 lone-pair, and 2 bonding electrons $\to FC=6-6-\frac{2}{2}=-1$.