Sulfur

File:Burning-sulfur.png

Burning sulfur

File:Liquid hydrogen sulfide.png

Liquid hydrogen sulfide

Sulfuric acid 96 percent extra pure

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Cyclooctasulfur

[[File:Nearly exhausted sulphur vat from which railroad cars are loaded, Freeport Sulphur Co., Hoskins Mound, Texas, 1a35438v.jpg|Nearly exhausted sulfur vat Sulfur or sulphur is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S₈. Elemental sulfur is a bright yellow, crystalline solid at room temperature.

Characteristics

Sulfur is a bright yellow crystalline solid. It is characterized by its odorous nature, often associated with the smell of rotten eggs, due to the presence of sulfur compounds. Sulfur is multivalent, meaning it has several common oxidation states, including -2, +2, +4 and +6.

Occurrence

Sulfur occurs naturally as the pure element (native sulfur) and as sulfide and sulfate minerals. It is an essential element for life and is found in two amino acids, cysteine and methionine.

Uses

Sulfur is used in many industries, including the production of sulfuric acid, the world's most produced chemical. It is also used in the vulcanization of rubber, as a fungicide, and as a component in black gunpowder.

History

The history of sulfur is rooted in antiquity, with mentions of the element found in the Biblical texts. It was known to the ancients in its native form and was also part of the primitive gunpowder formulation.

Gallery =

• Io
  Io
• Sulfur mining
  Sulfur mining
• Kawah Ijen sulfur
  Kawah Ijen sulfur
• Lapis lazuli block
  Lapis lazuli block
• Sulfur at carbon nanotube
  Sulfur at carbon nanotube
• 
  L-Cysteine
• 
  Methionine

See also

• Sulfur cycle
• Sulfur deficiency
• Sulfur metabolism

External links

• WebElements.com – Sulfur