1. Nitrogen has two single bonds, one double bond, and no lone pair of electrons. One chlorine has one double bond and two lone pairs of electrons. The other two chlorines have one single bond and three lone pairs of electrons.
2. Nitrogen has one single bond, two double bonds, and no lone pair of electrons. Two of the chlorines have one double bond and two lone pairs of electrons. One chlorine has one single bond and three lone pairs of electrons.
3. Nitrogen has three single bonds and one lone pair of electrons. Each chlorine has one single bond and three lone pairs of electrons.
4. Nitrogen has one single bond, two double bonds, and one lone pair of electrons. Two of the chlorines have one double bond and two lone pairs of electrons. One chlorine has one single bond and three lone pairs of electrons.
