Periodic Table of the Elements Silicon

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Periodic Table of the Elements: Silicon

Periodic Table of the Elements: Silicon

Atomic Number:	14
Atomic Symbol:	Si
	Silicon
Atomic Weight:	28.0855
Electron Configuration:	2 · 8 · 4

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silicon

World Encyclopedia | 2005 | Â© World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

silicon (symbol Si) Common, grey, nonmetallic element of group IV of the periodic table. Silicon is found only in combinations, such as silica and silicate. It is the second most abundant element in the Earth's crust (27.7% by weight). Silicon chips are extensively used in microprocessors. It was discovered in 1823 by Swedish chemist J. J. Berzelius. Properties: at.no. 14; r.a.m. 28.086; r.d. 2.33; m.p. 1410°C (2570°F); b.p. 2355°C (4271°F); most common isotope Si²⁸ (98.21%).

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