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in combination with other materials in glass, semi-conducting devices, concrete, brick, refractories, pottery, and silicones. The name originates from the Latin word 'silex' meaning flint or hard stone. The high-tech region of Silicon Valley, California, is named after this element. An element classified as a Metalloid has properties of both metals and non-metals. Some are semiconductors and can carry an electrical charge making them useful in calculators and computers. Silicon was was first identified by Antoine Lavoisier in 1787. Re-discovered by Jons Berzelius in 1823 Semi-conductors Glass Concrete Brick Pottery Silicones Name of Element : Silicon Symbol of Element : Si Atomic Number of Silicon : 14 Atomic Mass: 28.0855 amu Melting Point: 1410.0 °C - 1683.15 °K Boiling Point: 2355.0 °C - 2628.15 °K Number of Protons/ElectFrom computer chips to implants. Silicon is an element on the periodic table. The element has the symbol “Si” and has the atomic number 14. Silicon takes up the second highest amount of the Earth’s crust, 25.7%. It is found in the sun and the stars and makes up a class of meteorites, the aerolites. The element is found as oxides and sand such as quartz, amethyst, rock crystal, agate, opal, flint, and jasper. Minerals including asbestos, feldspar, clay and mica can also carry silicon. Though silicon is very useful, workers around the silicaceous dust may inhale it and develop the lung disease, silicosis Read more: http://scienceray.com/chemistry/simple-facts-about-silicon/#ixzz11UvkFMYh Silicon element facts: Silicon atoms contain 14 protons and a varying number of neutrons in their nuclei. In their neutral state they possess 14 electrons. Silicon is a very common element and makes up over a quarter of the Earth's crust. The most commonly known form of Silicon is sand, which is mainly Silicon Dioxide, a covalently bonded lattice structure. Silicon is one of the most widely used elements. Silicon is important to plant and animal life. Diatoms extract silica from water to build their cell walls. Silica is found in plant ashes and in the human skeleton. Silicon is an important ingredient in steel. Silicon carbide is an important abrasive and is used in lasers to produce coherent light at 456.0 nm. Silicon doped with gallium, arsenic, boron, etc. is used to produce transistors, solar cells, rectifiers, and other important solid-state electronic devices. Silicones range from liquids to hard solids and have many useful properties, including use as adhesives, sealants, and insulators. Sand and clay are used to make building materials. Silica is used to make glass, which has many useful mechanical, electrical, optical, and thermal properties. Read more: http://scienceray.com/chemistry/simple-facts-about-silicon/#ixzz11UvPOmIk rons in Silicon : 14 Number of Neutrons in Silicon : 14 Crystal Structure: Cubic Density @ 293 K: 2.329 g/cm3 Color of Silicon : gray