Question
What is the chemical formula of aluminium oxide?
Answer: Option C
:
C
∙ The combining elements of aluminium oxide are aluminium and oxygen.
∙ The chemical formula of a compound is obtained by a short-cut method of cross-multiplication of their valencies.
AluminiumOxygenSymbolAlOValency32
∙ After cross-multiplication of the valencies, we get the formula of the compound as Al2O3.
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:
C
∙ The combining elements of aluminium oxide are aluminium and oxygen.
∙ The chemical formula of a compound is obtained by a short-cut method of cross-multiplication of their valencies.
AluminiumOxygenSymbolAlOValency32
∙ After cross-multiplication of the valencies, we get the formula of the compound as Al2O3.
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