Q48 of 65 Page 24

Give the formulae of the stable binary compounds that would be formed by the combination of following pairs of elements.

(a) Mg and N2


(b) Li and O2


(c) Al and Cl2


(d) K and O2

A formulae is the representation of compounds in terms of symbols of its various elements.


(a) Mg and N2 reacts to formMg3N2 (magnesium nitrate).


(b) Li and O2 reacts to formLi2O (lithium dioxide).


(c) Li and O2 reacts to formAlCl3 (aluminium chloride).


(d) K and O2 reacts to formK2O (potassium oxide).


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