The formula of Aluminium sulphide:

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${Al}_{2} {SO}_{3}$

${Al}_{2} S_{3}$

${Al}_{2} {SO}_{4}$

${Al}_{2} S$

answer is D.

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Detailed Solution

The chemical formula for aluminium sulphide, often known as aluminium sulphide, is ${Al}_{2} S_{3}$ . In the air, it easily hydrolyzes to produce hydrogen sulphide. Aluminium sulphide is a substance that is greyish in colour and smells strongly of sulphur. It comes in six different crystalline forms: α, β, γ and δ. It can be created by combining sulphur and aluminium particles in a thermite-like process.

Aluminium in its ionic state shows +3 oxidation number and sulphide ion has -2 oxidation state. Thus two aluminium and three sulphide ions are bonded to form aluminium sulphide. Therefore the correct answer is ${Al}_{2} S_{3}$ .

Hence, option D is correct.

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