Explanation:
PO3^3- ==> The Phosphite anion
PO4^3 ==> The phosphate anion
Upon observation of both anions, what seems to be the differences?
Two can be spot.
The number of oxygen present and the oxidation number of phosphorus.
The difference in suffixes however is caused by the number of oxygen present.
Generally, in chemical nomenclature; -ate posseses more oxygen and =ite possess less oxygen.
A typical example is Nitrate and nitrite;
Nitrate ==> NO3-
Nitrite ==> NO2-
