Answer
The oxygen will have 1 lone pair.
Both nitrogen atoms will have 1 lone pair.
Work Step by Step
Oxygen:
1. A positive oxygen has 5 electrons in the valence shell.
2. Since the atom is making 3 bonds, there will remain 2 free electrons, which forms 1 lone pair
Nitrogen
1. A neutral nitrogen has 5 electrons in the valence shell.
2. Since the atoms are making 3 bonds each, there will remain 2 free electrons, which forms 1 lone pair.
