Question

The formal charge on carbon atom in carbonate ion is

• A. $+1$
• B. $-1$
• C. $+4$
• D. $Zero$

Answer 1

The correct option is D $Zero$

Carbonate ion $C{O}_3^{2-}$

Formal charge $F=V-(L+\frac{1}{2}B)$

where $V=$ Number of valence electrons .

$L=$ Number of lone pair electrons.

$B=$ Number of bonding electrons on that particular atom.

$\therefore$ Formal charge for $C$ atom is

$F=4-(0+\frac{1}{2}\times 8)$

$F=0$