When calcium reacts with sulfur the compound formed is __________.

Question

Quizplus · Accepted Answer

The chemical formula for the compound formed when calcium reacts with sulfur is CaS, which represents the combination of one calcium ion (Ca2+) and one sulfur ion (S2-). Options A, B, and E suggest the presence of multiple sulfur ions, which would require additional calcium ions to maintain charge balance. Option D suggests the presence of two sulfur ions, which would also require an additional calcium ion. Therefore, option C, CaS, is the best choice as it represents the correct formula for the compound formed.

When Calcium Reacts with Sulfur the Compound Formed Is __________