The chemical symbol for silicon is Si. Silicon is a metalloid with an atomic number of 14 and is essential in the field of electronics and technology due to its semiconductor properties. It is the second most abundant element in the Earth's crust, primarily found in silica (SiO₂) and various silicate minerals. Silicon's unique properties enable it to conduct electricity efficiently at certain temperatures, making it crucial for the production of integrated circuits and solar cells. Additionally, silicon is also used in glass manufacturing and as a key ingredient in various alloys.