The correct answer is B. Diatomic.
Sulfur is a chemical element with the symbol S and atomic number 16. It is a non-metallic, multivalent, and lustrous pale yellow, odorless, tasteless, and very brittle chemical element. It occurs naturally in elemental form as the mineral sulfur, or as an impurity in other minerals, such as pyrite and cinnabar. Elemental sulfur is a bright yellow, crystalline solid at standard temperature and pressure. It is odorless and has a slightly bitter taste. Sulfur is a non-metal and is not very reactive. It is insoluble in water, but soluble in carbon disulfide. Sulfur is an important element in many compounds, including sulfuric acid, sulfur dioxide, and sulfurous acid. It is also used in the production of gunpowder, matches, and fireworks.
The atomicity of an element is the number of atoms that make up a molecule of that element. The atomicity of sulfur is 2, which means that a molecule of sulfur contains 2 atoms of sulfur. Sulfur is a diatomic element because it forms molecules with two atoms of sulfur. The two atoms of sulfur are held together by covalent bonds. Covalent bonds are strong bonds that form when atoms share electrons.
The other options are incorrect because they do not represent the atomicity of sulfur. Option A, polyatomic, is incorrect because sulfur is not a polyatomic element. A polyatomic element is an element that forms molecules with more than two atoms. Option C, monoatomic, is incorrect because sulfur is not a monoatomic element. A monoatomic element is an element that forms molecules with only one atom. Option D, triatomic, is incorrect because sulfur is not a triatomic element. A triatomic element is an element that forms molecules with three atoms.