Sulphur: Difference between revisions
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Sulphur is represented by the symbol 'S' in the periodic table and has an atomic number of 16. The name may have been derived from the Arabic ‘sufra’ meaning yellow, or the Sanskrit ‘shulbari’ meaning enemy (ari) of copper (shulba)<ref>G. Eggert, M. Weichert, H. Euler, B. Barbier, Some news about Black Spots., 2004, Proceedings of Metal, p142 (pdf download).</ref>. It is a naturally occuring element which is frequently found and regarded as an essential element for life. It is found in the amino acids [[Methionine|methionine]] and [[Cysteine|cysteine]]. In cysteine the - [[SH group|SH group]] reacts with another -SH group on a different cysteine forming a [[Disulphide bond|disulphide bond]] <ref>Berg J.,Tymoczko J. and Stryer L. (2012) Biochemistry. 7th edition, Basinstoke: Freeman.</ref> | [[Image:Sulphur Lumps 99 98 .jpg|right|148x111px|lumps of sulphur]]Sulphur is represented by the symbol 'S' in the [[Periodic table|periodic table]] and has an [[Atomic number|atomic number]] of 16 and a standard relative [[Atomic mass|atomic mass]] of 32.065<ref>NIST. Sulfur. 2016 [cited 03/12/16]; Available from: http://webbook.nist.gov/cgi/cbook.cgi?ID=C7704349&amp;amp;amp;amp;Mask=40</ref>. The name may have been derived from the Arabic ‘sufra’ meaning yellow, or the Sanskrit ‘shulbari’ meaning enemy (ari) of [[Copper|copper]] (shulba)<ref>G. Eggert, M. Weichert, H. Euler, B. Barbier, Some news about Black Spots., 2004, Proceedings of Metal, p142 (pdf download).</ref>. It is a naturally occuring element which is frequently found and regarded as an essential element for life. It is found in the [[Amino acid|amino acids]] [[Methionine|methionine]] and [[Cysteine|cysteine]]. In [[Cysteine|cysteine]] the - [[SH group|SH group]] reacts with another -SH group on a different cysteine forming a [[Disulphide bond|disulphide bond]] <ref>Berg J.,Tymoczko J. and Stryer L. (2012) Biochemistry. 7th edition, Basinstoke: Freeman.</ref> | ||
When combined with oxygen, sulphur can form a dioxide or trioxide. | When combined with [[Oxygen|oxygen]], sulphur can form a [[Dioxide|dioxide]] or [[Trioxide|trioxide]]. | ||
=== References === | === References === | ||
<references /> | <references /> | ||
Latest revision as of 15:46, 4 December 2016
Sulphur is represented by the symbol 'S' in the periodic table and has an atomic number of 16 and a standard relative atomic mass of 32.065[1]. The name may have been derived from the Arabic ‘sufra’ meaning yellow, or the Sanskrit ‘shulbari’ meaning enemy (ari) of copper (shulba)[2]. It is a naturally occuring element which is frequently found and regarded as an essential element for life. It is found in the amino acids methionine and cysteine. In cysteine the - SH group reacts with another -SH group on a different cysteine forming a disulphide bond [3]
When combined with oxygen, sulphur can form a dioxide or trioxide.
References
- ↑ NIST. Sulfur. 2016 [cited 03/12/16]; Available from: http://webbook.nist.gov/cgi/cbook.cgi?ID=C7704349&amp;amp;amp;Mask=40
- ↑ G. Eggert, M. Weichert, H. Euler, B. Barbier, Some news about Black Spots., 2004, Proceedings of Metal, p142 (pdf download).
- ↑ Berg J.,Tymoczko J. and Stryer L. (2012) Biochemistry. 7th edition, Basinstoke: Freeman.