Question

enter the formula for the compound that forms from calcium and phosphate
express your answer as a chemical formula.

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Explanation:

Step1: Determine the ions

Calcium forms \(Ca^{2 +}\) ion. Phosphate is \(PO_{4}^{3-}\) ion.

Step2: Use charge balance

For charge balance, cross - multiply the charges. \(Ca^{2 +}\) and \(PO_{4}^{3-}\) give \(Ca_{3}(PO_{4})_{2}\) (since \(2\times3 = 3\times2\) for charge neutrality).

Answer:

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