what are the coumpound names? Ex: H20: Dihyrdogen monoxide

PH3
H3N
H3PO2
CuSO4
P2O2
H2SO5

What is the formula? Ex: Nitric Acid: HNO3
Titanium (IV) Oxide:

PH3The common name is phosphine. I would name this hydrogen phosphide (or trihydrogen phosphide)

H3NThe common name is ammonia. I would name it hydrogen nitride (or trihydrogen nitride.)
H3PO2 hypophosphorous acid
CuSO4copper(II) sulfate).
P2O2You may have meant P2O3--diphosphorus trioxide
H2SO5 common name Caro's acid. Peroxysulfuric acid or persulfuric acid.