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Sulfur
Sulfur or sulphur (see spelling differences) is a chemical element with symbol S and atomic number 16. It is an abundantmultivalent non-metal. Under normal conditions, sulfur atoms form cyclic octatomic molecules with chemical formula S8. Elemental sulfur is a bright yellow crystalline solid at room temperature. Chemically, sulfur reacts with all elements except for nitrogen and the noble gases.

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