Chemistry - Complete P-block Question with Solution | TestHub

It is a tribasic acid.

One mole of it is neutralized by 0.5 mole of $\mathrm{Ca}(\mathrm{OH}{)}_2$.

${\mathrm{NaH}}_2{\mathrm{PO}}_2$ is acidic salt.

It disproportionates of ${\mathrm{H}}_3{\mathrm{PO}}_3$ and ${\mathrm{PH}}_3$ on heating.