what is the correct formula that would result from the combination of the two ionic species? k+ and po43…

Explanation:

Step1: Determine charge - balance

In an ionic compound, the total positive charge must equal the total negative charge. The potassium ion ($K^{+}$) has a charge of + 1 and the phosphate ion ($PO_{4}^{3 - }$) has a charge of - 3.

Step2: Calculate number of $K^{+}$ ions

To balance the - 3 charge of the phosphate ion, we need 3 potassium ions since $3\times(+1)=+3$.

Answer:

$K_{3}PO_{4}$