Compounds and Elements

World Encyclopedia The Columbia Encyclopedia, 6th ed. Further reading

silicon

World Encyclopedia | 2005 | 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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Periodic Table of the Elements: Silicon

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

Periodic Table of the Elements: Silicon

Periodic Table of the Elements: Silicon

Atomic Number:	14
Atomic Symbol:	Si
	Silicon
Atomic Weight:	[28.084; 28.086]
Electron Configuration:	2 · 8 · 4

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