Mention the oxyacids of phosphorus and the oxidation states of phosphorus in them. 

Oxidation state of phosphorus is least in

White phosphorus, when heated with conc. NaOH solution in an inert atmosphere of CO_(2) forms phosphine and a sodium salt of oxoacid of phosphorus 'X' . The oxidation state of phosphorus in 'X' is

Write the names and formulae of any two oxyacids of sulphur. Indicate the oxidation state of sulphur in them.

Write the oxidation states of phosphorus in solid "PCl"_(5) .

The correct arrangement of following acids of phosphorus in the increasing order of oxidation state of phosphorous is

Write the oxidation states of sulphur in its oxyacids.

Write the formulae of the compounds, in which oxygen has positive oxidation states and mention the oxidation states of oxygen in them.

Why do we keep phosphorus in water?