Question

write the steps in writing the chemical formula of calcium phosphate.

Answer 1

1. formula if calcium - Ca
2. valency of calcium - 2+
3.formula of phosphate -PO4
4.valency of phosphate - 3-
5. writing them sequently- Ca^2+PO4^3-
6. Cross multiplying there valency we get -Ca3(PO4)2

NOTE -" ^ " this means to the power & in cross multiplying valency we exchange one's valency to other's.

hope it helps u : )

Answer 2

first you write the chemical name of substance e.g
Ca Ph4 and write the valency of them..just like

Ca Ph4
2 3
then cross multiplication of these substance.
answervis Ca3(ph4)2