6. Sulfur exists in two polymorphic forms ____________ and ______________ a) rhombic and monoclinic b) rhombic and triclinic c) hexagonal and triclinic d) hexagonal and monoclinic
Answer: a Explanation: Sulfur has two polymorphic structures: rhombic and monoclinic. When a single substance crystallizes in two or more forms depending on the conditions, it is called a polymorphous structure.
