What are the charges for compound CaS?

In calcium sulfide (CaS), calcium (Ca) has a charge of +2, as it is an alkaline earth metal that typically loses two electrons. Sulfide (S) has a charge of -2, as it gains two electrons to achieve a stable electron configuration. Therefore, the overall charge balance in CaS is neutral, with one Ca^2+ ion combining with one S^2- ion.