Phosphorus oxide

Phosphorus oxide can refer to:

Phosphorus pentoxide (phosphorus(V) oxide, phosphoric anhydride), P₂O₅
Phosphorus trioxide (phosphorus(III) oxide, phosphorous anhydride), P₂O₃
Several other, less common, oxides of phosphorus, including P₄O₇, P₄O₈, P₄O₉, PO and P₂O₆

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