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 and a standard relative 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;Mask=40</ref>. 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|148x111px|lumps of sulphur]]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<ref>NIST. Sulfur. 2016 [cited 03/12/16]; Available from: http://webbook.nist.gov/cgi/cbook.cgi?ID=C7704349&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 (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> | ||
When combined with oxygen, sulphur can form a dioxide or trioxide. | When combined with oxygen, sulphur can form a dioxide or trioxide. | ||
=== References === | === References === | ||
<references /> | <references /> | ||
Revision as of 17:18, 3 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;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.