Question

In $N{O}_3^{-}$ ion, the number of bond pairs and lone pairs of electrons on nitrogen atom are

• A. $2,2$
• B. $4,0$
• C. $1,3$
• D. $3,1$

Answer 1

The correct option is B $4,0$

Total number of bonds formed by nitrogen with three oxygen atoms $=4.$

So,

Number of bond pairs of electrons on nitrogen $=4$

Number of lone pairs of electrons on nitrogen $=0$

So, in $N{O}_3^{-}$ ion, the number of bond pairs and lone pairs of electrons on nitrogen atom are $4$ and $0$ respectively.

Hence, the correct choice is $\left(D\right).$