" Hypophosphorus acid is "

Write balanced chemical equations for the following reactions : (a) Hypophosphorus acid is added to AgNO_(3) solution (b) Chlorine gas is passed through hot and concentrated solution hydroxide. (c ) XeF_(2) undergoes hydrolysis.

The correct formula of salt formed by the neutralisation of hypophosphorus acid with NaOH is

What is the oxidation state of P in hypophosphorus acid ?