The element "5" doesn't exist in the periodic table. You might be referring to the element phosphorus (P).

The oxidation state of phosphorus can vary depending on the compound it is in. Here are some common oxidation states:

* +5: In compounds like phosphoric acid (H₃PO₄) and phosphorus pentoxide (P₂O₅)

* +3: In compounds like phosphorous acid (H₃PO₃)

* -3: In phosphides, such as sodium phosphide (Na₃P)

* 0: In elemental phosphorus (P₄)

If you provide more context about the specific compound containing phosphorus, I can tell you the specific oxidation state of phosphorus in that compound.