In `NO_(3)^(-)` ion, the number of bond pairs and lone pairs of electrons on nitrogen atom are :

In NO_(3)^(-) ion, the number of bond pair and lone pair of electrons on nitrogen atom are:

In NO_(3)^(-) ion, the number of bond pairs and lone pairs of electrons on nitrogen atom respectively are

In NO_3^- ion, the number of bond pair and lone pair of electrons no N-atom are :

In NO_3^+ ion, number of bond pairs and lone pairs of electrons are respectively

In OF_2 , the number of bond pairs and lone pairs of electrons are respectively,

A lone pair of electrons in an atom implies