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What is the formulae of Sodium oxide and Aluminum chloride?

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Na₃O and AlCl₂

Na₂O and AlCl₃

NaO and AlCl₂

NaO and AlCl

answer is A.

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Detailed Solution

Sodium oxide:

Valency of Sodium = 1 

Valency of Oxygen  = 2

Hence, the formula of sodium oxide is Na₂O.

Aluminum chloride:

Valency of Aluminum = 3

Valency of chloride = 1

Hence, the formula of Aluminum chloride is AlCl₃.

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