Answer the following question given this paragraph: Larger amounts of sulfur also come from hydrogen sulfide recovered during the purification of natural gas. Sulfur exists in several allotropic forms. The stable form at room temperature contains eight-membered rings, and so the true formula is S8. However, chemists commonly use S to simplify the coefficients in chemical equations; we will follow this practice in this book. Q: What does the stable form of sulfur at room temperature contain? A:
Options: a. six - membered rings. b. four - membered rings. c. electron shell. d. eight-membered rings.
d.