1. SILICON
JÖns Jacob Berzelius discovered silicon in 1824. Silicon comes from the Latin word "silicis- meaning "flint-.
Silicon has 14 neutrons, 14 protons, and 14 electrons. It is located in Period 3 and in group 14. It has an atomic weight of 28.0855 and its symbol is "Si-. Silicon's solid state is at 287 k. It is a hard dark gray non-metal. It is classified as semi-metallic. Silicon's atomic number is 14. The melting point for Silicon is 2577 F and the boiling point is 4271F it is solid at room temperature. Silicon has a density of 2330. Its electronic configuration is 2-8-4. Silicon carbide is one of the hardest elements known to man.
Silicon is the second most abundant element on Earth; the first most abundant element is oxygen. Silicon makes up 25.7% of the Earth's crust. Silicon comes in two forms, oxide and silicates. It is found in mainly in its oxide form as sand, quartz, agate, rock crystal, amethyst, flint, jasper, and opal. Granite, feldspar, mica, and clay are examples of its silicate form. It is also present in the stars and sun. The only acid able to affect silicon is hydrofluoric.
Silicon is used for things such as semiconductors and is an important ingredient in steel. Plants and animals that live in water extract the silicon from the water and se it to help make their cell walls. Silicon is used to make concrete and bricks and in solar cells. It is also the main ingredient in glass and is used for computer chips to store memory. Silicon is found in human's connective tissues and skin. If you combine Silicon with Carbon and Oxygen you will get a synthetic rubber. Silicon costs $0.50/g.
Intel, a small Silicon Valley company for which Silicon Valley is named due to silicon being the most prevalent semiconductor in MOS transistors, the most basic component in electronics in an area where miniaturized electronics industry is centered, chose early on in its history to abandon bipolar transistors in favor of MOS transistors for its practicality in integrated circuits. ... The structure of an MOS transistor is due to the basic property of Silicon's valence shell. With only 4 valence electrons silicon creates tetrahedral crystals. ... Most commonly phosphorus is injected in pla...
Introduction Silicon is the seventh-most abundant element in the universe and the second-most abundant element on Earth, behind oxygen. In fact, about 25% of Earth's crust is silicon.1 Silicon the element and Silicone the polymer are not to be confused. Silicon the element can be used to make concrete and brick, while hyper-pure silicon is used in solid state hard drives and many other solid-state electronics.2 Silicones are extremely useful because they are water repellent, heat stable, and very resistant to chemical attack. ... Silicone polymers consist of an inorganic silicon-oxygen ...
Pirates of Silicon Valley Pirates of Silicon Valley was a movie about Bill Gates and how Microsoft got started and also about Steve Jobs and how Apple got started. The movie is called Pirates of Silicon Valley because it is about piracy in the computer world and Silicon Valley is a place in California where computers are built. ... In conclusion there were many unethical events that occurred during the movie, Pirates of Silicon Valley, many of them involving lying, deceit and also stealing. ...
These roles not only played part in creating the Internet and computer industries, but also promoted the growth and development of the Silicon Valley through the region. ... The key factor in the promoting Silicon Valley as the location for technology companies is government funding for Bay Area institutions, primarily, Stanford University. ... As companies have looked to ramp up new industries, government agencies and government funded university research labs have been a constant source of employees for cutting edge industries. (64) The other factor in the growth of Silicon Valley and co...
The electronic properties of GaAs are superior to silicon's. ... Also, GaAs devices generate less noise than silicon devices. ... Silicon has two major advantages over GaAs. First, silicon is cheap. ... Silicon dioxide can easily be incorporated into silicon circuits wherever a good insulator is required. ...
Silicon (Si) and germanium (Ge) are widely used in semiconductors. ... Each silicon atom in the crystal is surrounded by four of its nearest neighbors. ... So at low temperate the silicon is a poor conductor. ... For example, when a silicon atom is replaced by an atom with five outer electrons such as arsenic, four of the electrons form covalent bonds with the four neighboring silicon atoms. ... Wafer slicing Single crystal silicon ingots are characterized by the orientation of their silicon crystals. ...
Marxian economic theory first originated from Karl Marx in the 1800s. Marxian economists believe that you are automatically born into a class without choice or say. They feel that " class refers to the production, appropriation, and distribution of surplus." This quote hold a lot of significance...
Germanium was the semiconductor used up to about 1960 when it was replaced by silicon. Silicon too is a group 4 element like germanium; it has a 1.1eV energy gap. ... Silicon has a tetrahedral structure, when silicon atoms are covalently bonded they share one electron with another silicon atom. ... If silicon is doped with a group 3 element such as boron it will form a p-type semiconductor. Silicon 4 electrons but boron has only 3 electrons so boron will share all of its electrons but there will be one silicon atom without an electron that can be shared in the covalent bond. ...