write the method to find out the molecular formula of Aluminium oxide
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Answer:
Aluminium oxide
Al2O3
Aluminium oxide (IUPAC name) or aluminum oxide (American English) is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium(III) oxide.
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Explanation:
You can do it by applying Criss-Cross method
The valency of Al is +3 and of oxygen is -2
So do Criss Cross between them and change their valencies at their feet
So the answer is
Al2O3
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