Q3 of 16 Page 57

Write the steps in deducing the chemical formulae of the following compounds.

calcium oxide

Calcium Oxide-

Formula:- CaO


Step 1 :


To write the symbols of the radicals. (Basic radical on the left.)


Ca O


Step 2: To write the valency below the respective radical.


Ca O


+ 2 -2


Step 3: To cross-multiply as shown by the arrows the number of the radicals.


Ca O


+ 2 -2


Step4: To write down the chemical formula of the compound in the simplest form.


CaO


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