Question

Formal charge on nitrogen and oxygen in $N{O}_3^{-}$ ion are respectively:

• A. $0,\frac{-1}{3}$
• B. $+1,\frac{-1}{3}$
• C. $+1,\frac{-2}{3}$
• D. $0,\frac{-2}{3}$

Answer 1

The correct option is A $0,\frac{-1}{3}$

Formula change is basically a change given to an atom, on assuming that the electrons in a chemical bond are shared equally between the atoms, neglecting theirrelative, $EN.$

$FC=V-N-\frac{B}{2}$ $(V=\text{no. of valance electron}N=\text{No. of non bonding electrons}B=\text{No. of electrons in covalent bond})$

$FC$ on $N$ in $N{O}_3^{-}=0$

$FC$ on $O$ in $N{O}_3^{-}=\frac{-1}{3}$