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Q.

Write the chemical formulae of the following.

(a) Magnesium chloride

(b) Calcium oxide

(c) Copper nitrate

(d) Aluminum chloride

(e) Calcium carbonate

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Detailed Solution

Chemical formulae:

(a) Magnesium chloride = MgCl2

For magnesium(Mg), the valency = 2

For chlorine (Cl), the valency = 1

Now criss-cross the symbol with the valency of another element. Thus, the chemical formula will be MgCl2.

(b) Calcium oxide = CaO

(c) Copper nitrate = Cu(NO3)2

(d) Aluminum chloride = AlCl3

(e) Calcium carbonate = CaCO3

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Write the chemical formulae of the following.(a) Magnesium chloride(b) Calcium oxide(c) Copper nitrate(d) Aluminum chloride(e) Calcium carbonate