Question

What is the formula of a compound formed between Sulfur and Cobalt (III)?

Answer 1

Cobalt(III) Sulfide I guess... \(\sf\large Co_2S_3\)

Answer 2

Thank you very much. Is there a simple way of explaining how to figure that out, or would it be to much trouble to explain?

Answer 3

There are only a few options, A sulfide, a sulfate or a sulfite.
Since sulfate and sulfite contain oxygen, and sulfide only contains sulfur, I think that should be the right answer.

Answer 4

You're very good at explaining, thanks again.