Question

iii.Which amongst, CaCO3 and Ca(CO3)2 is the correct formula. Give reason ​

Answer 1

CaCO3 because if we use valency here we will get this formula as:

Calcium(Ca) has 2+ charges on it.

Carbonate(CO3) has 2- charges on it.

Ca CO3

2+ 2-

By cross multiplying.

Hence we get

CaCO3.

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