The given elements are potassium and phosphorous. Phosphorus is found in the environment as phosphate. The symbol for potassium and phosphate are K and
P
O
4
3
−
. The charge on K is +1, which means to balance the charge on phosphate ion; 3 potassium ions will combine with it. Thus, an ionic bond is formed between potassium and phosphate.
The name of a binary ionic compound for potassium and phosphorus is Potassium phosphate and its chemical formula
K
3
P
O
4
.
