If "kallium" in the questions was intended to be "kalium", the Latin name for potassium, the formula of the most common type is is K3PO4, which is more exactly called potassium orthophosphate KPO2 is the formula for another compound that can be called "kalium" phosphate, more exactly metaphosphate. Either formula can also have water of hydration.
The chemical formula for rubidium phosphate is Rb3PO4.
The chemical formula for disodium phosphate is HNa2PO4
The chemical formula of chlorine phosphate is Cl3PO4.
Formula: BPO4
The chemical formula for cesium phosphate is Cs3PO4.
The chemical formula of triphenyl phosphate is C18H15O4.
The answer is PO4
The formula for lithium hydrogen phosphate is Li2HPO4.
The chemical formula for potassium phosphate is K3PO4.
The chemical formula for cuprous phosphate is Cu3(PO4)2.
The chemical formula of strontium phosphate is Sr3(PO)2.
The chemical formula for phosphate is PO4^3-.