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The chemical formula of a covalent molecular substance gives the number of atoms per molecule. The formula of a covalent network or ionic compound gives the simplest ratio of atoms/ions in the ...

Part of Combined Science Atomic structure and the periodic table For example, magnesium oxide is made up of two elements, magnesium and oxygen. Its formula is MgO. This shows that it has one atom of ...

As students progress in their study of chemistry, it becomes increasingly important for them to be able to identify different substances and compounds using chemical formulas. Fortunately, there are a ...