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Question

How can you name chemical compounds from their formulae in the following cases?

Give examples in support of your answer

If a compound contains three elements (tertiary compounds) one of which is oxygen


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Solution

Definition of formula

A chemical formula shows the elements that make up the compound and the numbers of atoms of each element in the smallest unit of that compound, be it a molecule or a formula unit.

Metals combine with polyatomic ions to give ionic compounds. Name the cation first (specifying the charge, if necessary), then the polyatomic ion as listed in the table above (or as derived from the rules which were given).

NaOHSodium hydroxide
Ca(NO3)2Calcium nitrate
(NH4)2SO4Ammonium sulfate
Mg(C2H3O2)2Magnesium acetate
NaHCO3Sodium hydrogen carbonate or sodium bicarbonate


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