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silicon (Si), a nonmetallicchemical elementin thecarbonfamily (Group 14 [IVa] of the periodic table). Silicon makes up 27.7 percent ofEarth’s crust; it is the second most abundant element in the crust, being surpassed only byoxygen. ...
Element Names in Other Languages French silicium German Silicium Italian silicio Spanish silicio Portuguese silício Anions or Anionic Substituent Groups silicide (general) Si-, silicide(•1-) Si4-, silicide(4-) Cations or Cationic Substituent Groups silicon (general) Si+, silicon...
About this element Symbol:Si Date of discovery:1787 Name origin:Latinsilex Appearance:dark gray, bluish tinge Discoverer:Antoine Lavoisier Obtained from:silicon dioxide or silicate Melting point:1414 K Boiling point:2900 K Density[kg/m3]:2.33 ...
element that occurs in both gray crystalline and brown noncrystalline forms. It is the second most abundant element in the Earth's crust and can be found only in silica and silicates. Silicon is used in glass, semiconductors, concrete, and ceramics.Atomic number14. SeePeriodic Table. ...
It is not present as a single element but is always associated with another element, most often oxygen, mainly in the form of silicates (SiO2). Silicon appears in the same column (group 14) of the periodic table as carbon and thus shares some properties with the latter. However, there ...
I chose this sample to represent its element in myPhotographic Periodic Table Poster. The sample photograph includes text exactly as it appears in the poster, which you are encouraged to buy a copy of. Source: Contributor: 10 January, 2004 ...
This sample represents hafnium in the "The Grand Tour of the Periodic Table" mineral collection from Jensan Scientifics. Visit my page about element collecting for a general description, or see photographs of all the samples from the set in a periodic table layout or with bigger pictures in nu...
百度试题 结果1 题目19 Which element is in the same period of the Periodic Table as silicon? C A germanium B scandium C sodium D strontium 相关知识点: 试题来源: 解析 C 反馈 收藏