Silicon

From Citizendium
Jump to: navigation, search
This article is a stub and thus not approved.
Main Article
Discussion
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
Properties [?]
 
This editable Main Article is under development and subject to a disclaimer.
Silicon
28.0855(3)



  Si
14
1s22s22p63s23p2
[ ? ] Metalloid:
Properties:
In crystalline form, grayish metallic luster. Relatively inert chemically.
Uses:
Concrete, glass, refractories, ceramics, semiconductors.


Silicon is a chemical element, having the chemical symbol Si. Its atomic number (the number of protons) is 14. It has a standard atomic weight of 28.0855 g•mol −1, and is typically found as a solid in its various forms as silicon dioxide, silica and silicates.

Silicon is considered a member of the "Metalloid" class of element. At a pressure of 101.325 kPa, it has a boiling point 3,265 °C, and a melting point of 1,414 °C. In Earth's crust, silicon is the second most abundant element after oxygen, being about 28% of the crust by mass.[1] Silicon has a density of 2.33 g/cc.

References