Respuesta :

the formula is Al2O3.  2 aluminium and 3 oxygen
 

The compound of aluminium is aluminum trioxide. The compound is having molecular formula as Al₂O3.

In this compound, aluminium is having oxidation state 3 while oxygen is having oxidation state 2. It is formed as valency of aluminium is 3 while oxygen is 2. So the compound is having molecular formula as Al₂O3.

It is most common compound of aluminium.

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