The oxoacid of phosphorus which contains $4 \ P-O-H$ bonds,$2 \ P=O$ bonds,and one $P-O-P$ bond is

Which of the following represents the correct order of the inert pair effect?

Explain the nature of oxide compounds of group-$15$ elements.

Which of the following substances is a deliquescent ionic solid?

In the Birkeland-Eyde process,the raw material used is:

Zinc on reaction with concentrated nitric acid gives an oxide of nitrogen $(A)$. Zinc with dilute nitric acid gives another oxide of nitrogen $(B)$. Oxidation numbers of nitrogen in $(A)$ and $(B)$ are respectively: