Question

what is the formula of barium phosphate? ba₃p₂ bahpo₄ ba₃(po₃)₂ ba₃(po₄)₂

Explanation:

Step1: Determine the charges of ions

Barium (\(Ba\)) has a charge of \(+2\) (\(Ba^{2+}\)). Phosphate ion (\(PO_{4}\)) has a charge of \(-3\) (\(PO_{4}^{3 -}\)).

Step2: Use the criss - cross method

To balance the charges, we use the criss - cross method. The number of \(Ba^{2+}\) ions is \(3\) (because \(3\times(+ 2)=+6\)) and the number of \(PO_{4}^{3 -}\) ions is \(2\) (because \(2\times(-3)=-6\)).

Answer:

\(Ba_{3}(PO_{4})_{2}\)