Phosphorus acid

Phosphorus oxoacids are oxoacids of phosphorus. Phosphorus exhibits oxidation states from +1 to +5. Oxygen may be in oxidation state -2 or -1, depending on whether a compound contains the peroxide group.

There are a large number of such compounds, some of which cannot be isolated and are only known through their salts.

Examples of phosphorus acids include:

Phosphorus oxoacids containing P in oxidation state +1:

Phosphorus oxoacids containing P in oxidation state +3:

Phosphorus oxoacids containing P in oxidation state +5 (see also phosphoric acids and phosphates):

Phosphorus oxoacids containing P in oxidation state +4:

Phosphorus oxoacids containing P in mixed oxidation states:

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