Reaction of ammonia with excess $Cl_2$ gives:

In the $15^{th}$ group of the periodic table,the elements $N, P, As, Sb$,and $Bi$ are present. As we move from $N$ to $Bi$,how do the oxides with the general formula change?

The good reducing nature of $H_3PO_2$ is attributed to the presence of:

Which one of the elements is most metallic?

Describe the preparation,properties,and structures of oxides of nitrogen.

Which of the following, when subjected to thermal decomposition, will liberate dinitrogen?
$(i)$ Sodium nitrate
$(ii)$ Ammonium dichromate
$(iii)$ Barium azide