Write the molecular formula of the compound formed by alluminium and oxygen (Atomic number of Alluminium-13 , Oxygen-8)
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Answer:
Explanation:Al2O3
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The valency of aluminium is 3
The valency of oxygen is 2
When u write the formula:
-The anion should be written first followed by the cation
-The valences should be exchanged and mentioned in the subscript
The answer is :
Al2O3
(Mention 2and3in subscript)
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