Nitrous oxide is known as

The gas produced by treating an aqueous solution of ammonium chloride with sodium nitrite is .... .

When nitrogen dioxide $(NO_2)$ is dissolved in water,what is the product formed?

Provide information about the allotropes of phosphorus.

The possible oxidation states of $Tl$ are

Draw the structures of different oxoacids of phosphorus and indicate the oxidation state of phosphorus,characteristic bonds,and their numbers in each.