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Silicon is present in the Earth's crust at concentrations of 28%, making it the second most abundant element there. Silicon's concentration in seawater can vary from 30 parts per billion on the surface of the ocean to 2000 parts per billion deeper down. Silicon dust occurs in trace amounts in Earth's atmosphere.
Silicon is a chemical element; it has symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic lustre, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, lead, and flerovium are below it. It is relatively unreactive.
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
The other group 14 elements have a lower tendency to catenate. Hydrosilicons ( binary silicon-hydrogen compounds ), a silicon analogs of hydrocarbons, such as silanes Si n H 2 n +2 are known for n = 1–8, in which thermal stability decreasing as n increases (e.g. silane SiH 4 and disilane Si 2 H 6 ), as are cyclosilanes (e.g. cyclopentasilane ...
Element 14 is silicon, the 14th element in the periodic table of elements. Element 14 may also refer to: Element 14 (company), a former developer of DSL equipment created from the restructuring of Acorn Computers; Farnell element14, a brand and subsidiary of electronic parts distributor Premier Farnell
Silicon's large volume change (approximately 400% based on crystallographic densities) when lithium is inserted, along with high reactivity in the charged state, are obstacles to commercializing this type of anode. [4] Commercial battery anodes may have small amounts of silicon, boosting their performance slightly.
The chemical elements are what the periodic table classifies and organizes. Hydrogen is the element with atomic number 1; helium, atomic number 2; lithium, atomic number 3; and so on. Each of these names can be further abbreviated by a one- or two-letter chemical symbol; those for hydrogen, helium, and lithium are respectively H, He, and Li. [6]
Chemical symbols are the abbreviations used in chemistry, mainly for chemical elements; but also for functional groups, chemical compounds, and other entities. Element symbols for chemical elements, also known as atomic symbols , normally consist of one or two letters from the Latin alphabet and are written with the first letter capitalised.