Silicon
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Silicon is a chemical element, having the chemical symbol Si. Its atomic number (the number of protons) is 14. It has a standard atomic weight of 28.0855 g•mol −1, and is typically found as a solid.
Silicon is considered a member of the "Metalloid" class of element. At a pressure of 101.325 kPa, it has a boiling point 3,265 °C, and a melting point of 1,414 °C.