Respuesta :
Al2S3. Al has a +3 charge and S has a -2 charge, generally speaking
Answer: Al2S3
Explanation: The oxidation number of Al is +3 since it is in group 3 ( Al+3).
Sulfur is in group 6 and has an oxidation of -2 since it is a nonmetal and an anion.
Criss cross the charges and write them as subscripts.
So the chemical composition is
Al2S3