Chemistry - Complete P-block Question with Solution | TestHub

In oxoacids phosphorus is tetrahedrally surrounded by other atoms.
All these acids contain at least one $\mathrm{P}=\mathrm{O}$ bond and one $\mathrm{P}–\mathrm{OH}$ bond.

Pyrophosphorous acid $\to {\mathrm{H}}_4{\mathrm{P}}_2{\mathrm{O}}_5$.

Hypophosphoric acid $\to {\mathrm{H}}_4{\mathrm{P}}_2{\mathrm{O}}_6$.

Phosphoric acid $\to {\mathrm{H}}_3{\mathrm{PO}}_4$.

Pyrophosphoric acid $\to {\mathrm{H}}_4{\mathrm{P}}_2{\mathrm{O}}_7$.