Silicon

2009-01-15T17:44:18Z

165.139.0.20: /* Silicon Info from USGS */

{{Element |
name=Silicon |
symbol=Si |
available= |
need= |
number=14 |
mass=28.0855 |
group=14 |
period=3 |
phase=Solid |
series=Metalloids |
density=2.33 g/cm3 |
melts=1687K, 1414°C, 2577°F |
boils=3538K, 3265°C, 5909°F |
isotopes=28 29 30 |
prior=[[Aluminum|Al]] |
next=[[Phosphorus|P]] |
above=[[Carbon|C]] |
aprior=[[Boron|B]] |
anext=[[Nitrogen|N]] |
below=[[Germanium|Ge]] |
bprior=[[Gallium|Ga]] |
bnext=[[Arsenic|As]] |
radius=110 |
bohr=111 |
covalent=111 |
vdwr=210 |
irad=(+4) 40 |
ipot=8.15 |
econfig=1s2 2s2 2p6 3s2 3p2 |
eshell=2, 8, 4 |
enega=1.9 |
eaffin=1.39 |
oxstat=4, 2 |
magn=Nonmagnetic |
cryst=Face centered cubic |
}}
'''Silicon''' is a Metalloid in group 14.
It has a Face centered cubic crystalline structure.
This element has 3 stable isotopes: 28, 29, and 30.
 
Silicon is the second most common element in the lunar crust (after [[oxygen]]). Silicon on the moon is most commonly found in the form of the silicate ion, SiO4+4. Most lunar rocks are in the form of silicates.

In elemental form, silicon is a ''semimetal''; in purified form, it is a semiconductor which is used for semiconductor electronic devices. Wafers of single-crystal silicon may be used to make solar cells. An alloy of siicon and [[hydroge]]n, ''amorphous silicon'' (sometimes abbreviated to a-Si) is also used as a material for thin-film solar cells, which are lower in cost, but also lower in efficiency.

The primary oxide of silicon is silica, SiO2; the oxide SiO also exists, and in general, a silicon oxide may be any mixture of these, with an empirical formula SiOx. Silica is a transparent solid which may be found in crystalline or amorphous form. Silica or silicate is the primary constituent of [[glass]]. While a form of glass can be made from pure silica, the very high melting temperature of silica makes high-silica glass difficult to work with, and almost all commonly used glass contains other components. On Earth, sodium oxide is usually added to form low-cost ''soda-lime glass'' (commonly called ''window glass''); boron oxides may then added to form the higher-cost ''borosilicate glass'', which has a lower coefficient of thermal expansion and hence may be used in applications involving heating and cooling. Many other specialized glass formulations exist, which use silica.

Organic silicon compounds, known as ''silicones'', are flexible compounds sometimes used as sealing materials.

im a fag.

Lunarpedia - User contributions [en]

Silicon