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Silicon

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This is an old revision of this page, as edited by Mav (talk | contribs) at 13:59, 3 March 2002 (added USGS isotope info + slight reformat of definition + adding references that will be used in upcoming table addition). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Silicon is a chemical element in the periodic table that has the symbol Si and atomic number 14.

Isotopes

Silicon has nine isotopes, with mass numbers from 25-33. 28Si (the most abundant isotope, at 92.23%), 29Si (4.67%), and 30Si (3.1%) are stable; 32Si is a radioactive isotope produced by argon decay. Its half-life, after much argument, has been determined to be approximately 276 years, and it decays by beta emission to 32P (which has a 14.28 year half-life) and then to 32S.


References:
Los Alamos National Laboratory - Silicon
WebElements.com - Silicon
EnvironmentalChemistry.com - Silicon
Schenectady County Community College - Silicon

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