Discovery Silicon is a chemical element that is

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Discovery Silicon is a chemical element that is a tetravalent metalloid. It is located

Discovery Silicon is a chemical element that is a tetravalent metalloid. It is located in period 14 and group 3 in the periodic table. It was discovered by Jöns Jacob Berzelius in 1823. It was named, however, by Thomas Thomson. Silicon makes up 27. 7% of the Earth's crust and is the second most abundant element in the crust when measure by mass. Silicon is composed of three isotopes, silicon-28, silicon 29, and silicon-30, silicon-28 being the most abundant.

• • Atomic Symbol: Si Electron configuration: Ne 3 s 2 3 p

• • Atomic Symbol: Si Electron configuration: Ne 3 s 2 3 p 2 Atomic number: 14 Melting point: 2, 577°F (1, 414°C)

PHYSICAL PROPERTIES Phase: Solid Density: 2. 3290 g·cm− 3 Liquid density at melting point:

PHYSICAL PROPERTIES Phase: Solid Density: 2. 3290 g·cm− 3 Liquid density at melting point: 2. 57 g·cm− 3 Melting point: 1414 °C, 2577 °F Boiling point: 3265 °C, 5909 °F

ATOMIC/CHEMICAL PROPERTIES Electronegativity: 1. 90 Atomic radius: 111 pm Covalent radius: 111 pm It

ATOMIC/CHEMICAL PROPERTIES Electronegativity: 1. 90 Atomic radius: 111 pm Covalent radius: 111 pm It is a metalloid It can form chemical bonds It can also share its four outer electrons

USES FOR SILICON: Silicon is good in usage in electrical engineering because silicon are

USES FOR SILICON: Silicon is good in usage in electrical engineering because silicon are used as alloys for casting or semiconductors for electronics, such as in transistors, circuits and computer chips. It is also used to make concrete and cement and bricks. Another use for silicon is in implants or in lubricants. Silicon is also used in the steel industry as well to make steel silicon alloys.

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