Question

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

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

Answer 1

The correct option is D $4,0$

Option D is correct.

Valence electron present in nitrogen atom is 5

As there is a negative charge, by combining the negative charge, the valance electronh become $=5+1=6$

One oxygen atom forms double bonds.

Two oxygen atom shared with two electrons of nitrogen atom.

$\therefore$ Three oxygen atoms shared with eight electrons of N-atom.

Thus we get, number of bond pair-4, number of lone pair-0