Question

The molecular formula of calcium phosphate is _______.

Answer 1

Calcium phosphate is a calcium salt of phosphoric acid with a chemical formula ${\mathrm{Ca}}_3{\left({\mathrm{PO}}_4\right)}_2$. It is also known as Calcium phosphate tribasic or Tricalcium Phosphate.

The symbol of calcium is $\mathrm{Ca}$ with valency 2.

The formula of phosphate is ${\mathrm{PO}}_4$ with valency 3.

Interchanging the valency,

$$\begin{gathered} \mathrm{Ca}{\mathrm{PO}}_4 \\ \searrow \swarrow \\ 23 \end{gathered}$$

Hence, the molecular formula of calcium phosphate is ${\mathrm{Ca}}_3{\left({\mathrm{PO}}_4\right)}_2$.