Question

Using the example of calcium chloride explain how the formulae of compounds are derived

Answer 1

Answer:

calcium +chlorinde

ca+cl gives Cacl2

Answer 2

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❥..The charge on calcium atom is 2 positive and charge on chlorine atom is 1 negative.

❥..Therefore, to balance the charge we require two atoms of chlorine to react with one atom of calcium. Also, the compound is neutral thus net charge is zero.!¡!

➡ CaCl2

➡Ca chlorine

➡Valency 2 valency 1

➡By cross multiplication

➡Ca Cl =CaCl2

➡+2 - 1

❥..In this way formula of compounds are derived. !

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