Question

5 Use the cross over method to find the chemical formula of
a) sodium chloride
b) magnesium chloride​

Answer 1

a) NaCl

b) MgCl2

a) Valency of Na is 1 and valency of Cl is also 1.

So, the formula is NaCl

b) Valency of Mg is 2 and valency of Cl is 1.

So, the formula is MgCl2.....

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