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What is the molecular formula of aluminium oxide?

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Detailed Solution

The molecular formula of aluminium oxide is Al₂O₃. Two aluminium atoms combine with three oxygen atoms to form aluminium oxide.

Aluminium is a trivalent metal (Al³⁺) and oxygen is divalent (O²⁻). To balance charges, two aluminium ions join with three oxide ions, giving Al₂O₃.

Property	Detail
Chemical formula	Al₂O₃
Common name	Alumina
Appearance	White crystalline solid
Occurrence	Main component of bauxite ore
Uses	Making aluminium metal, abrasives, ceramics, electrical insulators

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