10. Using the below valency chart, write the chemical formula for aluminum oxide and
aluminum chloride

The chemical formula of aluminum chloride is AlCl₃ and the chemical formula of aluminum oxide is Al₂O₃.
The chemical formula of aluminum chloride is written as;
Al³⁺ + Cl⁻ → AlCl₃
The chemical formula of aluminum oxide is written as;
Al³⁺ + O²⁻ → Al₂O₃
Thus, the chemical formula of aluminum chloride is AlCl₃ and the chemical formula of aluminum oxide is Al₂O₃.
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