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Valency

Aluminium bel...

Question

Aluminium belongs to group 13 and sulphur belongs to group 16 of the periodic table. The compound formed by aluminum and sulphur is:

A

Al₂S₄

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B

Al₃S₂

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C

AlS₂

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D

Al₂S₃

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Solution

The correct option is D
Al₂S₃

The valence of aluminum is 3 and the valence of sulphur is 2. So the formula of the compound is Al₂S₃.

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