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[Silicon]
 
   Silicon is a nonmetallic chemical element in the carbon family of elements. Silicon, by atomic symbol Si, is the second most abundant element in the earth's crust, surpassed only by oxygen. Silica in the form of sand and sandstone is one of the most common, and at the same time, unique industrial minerals. Found in every rock type of every geologic age and virtually everywhere of the world, silica is used in products that touch just about every aspect of daily life. Imagine a world in the 1990s without computer chips, fiber optics, or glass, and you have just begun to understand how important silica is to the quality of life we enjoy.
index: [Silicon]
 
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  Biology & Environmental effects
    Biology  .....[1Page More]
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  General Properties of Silicon  .....[1Page More]
    History  .....[1Page More]

  Investigating the status of Silicon in Iran & World
    Significant consumptions of Silicon  .....[1Page More]
    The exploration, extraction & mineral- processing methods of Silicon
   The exploration main methods of Silicon  .....[1Page More]
   The mineral- processing main methods of Silicon  .....[1Page More]
 
 
 
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Atomic Number: 14
Atomic Weight: 28
Density:
کوارتز 65/2
Hardness: 7
Color: colorless-white
Streak: white
Period:
3
Table Group:
14
 
 
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