Question

steps in writing the chemical formula of calcium phosphate

Answer 1

The formula of calcium is ca and it's valency is 2, The formula of phosphate is po4 and it's valency is 3 in case of writing chemical formula valencys of the elements inter change. so the formula of calcium phosphate is ca3(po4)2

Answer 2

Hey there !

Calcium = Ca
Valency = 2

Phosphate = PO₄
Valency = 3
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Write the symbol and valency of calcium and phosphate as shown below :-


Symbol Ca PO₄
Valency 2 3

Now , criss cross the chemical formula of calcium with the valency of phosphate and ,
also the chemical formula of phosphate with calcium,
we get the chemical formula as :-
Ca₃(PO₄)₂

We are putting here brackets , as there are more than 2 ions in the compound.

Hope this Helps You !