Question

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

Explanation:

Step1: Determine the charge of barium ion

Barium (\(Ba\)) is in group 2 of the periodic table. So, the barium ion has a charge of \(Ba^{2+}\).

Step2: Determine the charge of phosphate ion

The phosphate ion has the formula \(PO_{4}^{3 -}\).

Step3: Use the criss - cross method

To form a neutral compound, we use the criss - cross method. The charge of \(Ba^{2+}\) (2) becomes the subscript of \(PO_{4}^{3 -}\), and the charge of \(PO_{4}^{3 -}\) (3) becomes the subscript of \(Ba^{2+}\).

Answer:

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