Final answer:
The name of the compound Al2S3 is aluminum sulfide or aluminium sulfide, depending on regional spelling preferences. The correct options, without the need for indicating the oxidation state with a Roman numeral, are either (a) aluminum sulfide or (d) aluminium sulfide as aluminum has only one common oxidation state which is +3.
Step-by-step explanation:
The name of the compound with the formula Al2S3 is aluminum sulfide or aluminium sulfide, depending on the regional spelling preference for the element aluminum/aluminium. In the case of the options provided, we need to consider the oxidation state of aluminum in the compound. Since aluminum typically forms +3 ions (Al3+), and there is no Roman numeral used in the name, the correct option is either (a) aluminum sulfide or (d) aluminium sulfide.
Both the name aluminum sulfide and aluminium sulfide are correct, but the option must be chosen based on the specific nomenclature rules in your region and the spelling convention used. The presence of the Roman numeral in the options indicates the oxidation state of the metal, which is unnecessary for aluminum in this context since it has only one common oxidation state, which is +3.
Therefore, the correct options from the list provided are either (a) aluminum sulfide or (d) aluminium sulfide. These names are used when the context does not require stating the oxidation state of the metal explicitly.