Silicon is a chemical element; it has the symbol Si and the atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic lustre, and is a tetravalent non-metal and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, lead, and flerovium are below it. It is relatively ...

2018年4月27日 · Silicon is the seventh-most abundant element in the universe and the second-most abundant element on the planet, after oxygen, according to the Royal Society of Chemistry. About 25 percent of the...

Silicon is the second most abundant element in earth’s crust. It was discovered in 1823 by Jöns Jacob Berzelius. Silicon has tremendous uses including manufacturing of ceramic, glass, synthetic polymers and is an essential part of integrated circuits. Compounds of silicon were used long before the discovery of silicon.

Many rocks and minerals contain silicon. Examples include sand, quartz, clays, flint, amethyst, opal, mica, feldspar, garnet, tourmaline, asbestos, talc, zircon, emerald, and aquamarine. Silicon never occurs as a free element. It is always combined with …

2023年6月30日 · When specific silanes are made to undergo a specific reaction, they are turned into silicone, a very special silicon complex. Silicone is a polymer and is prized for its versatility, temperature durability, low volatility, general chemical resistance and thermal stability.

2019年7月3日 · Silicon is a metalloid element with atomic number 14 and element symbol Si. In pure form, it is a brittle, hard solid with a blue-gray metallic luster. It is best known for its importance as a semiconductor. Atomic Weight: 28.0855. Discovery: Jons Jacob Berzelius 1824 (Sweden) Electron Configuration: [Ne]3s 2 3p 2.

Silicon (pronunciation SIL-ee-ken [2]), represented by the chemical symbol or formula Si [1], is a semiconductor [20] belonging to the carbon family [23]. It can be of two types, amorphous powder and solid crystalline form. Naturally occurring Si is a mixture of three stable isotopes with mass numbers 28, 29 and 30 [1, 3].

Silicon is the second most abundant element on earth after oxygen, representing nearly 26% of the earth's crust by mass. It is not present as a single element but is always associated with another element, most often oxygen, mainly in the form of silicates (SiO2).

Silicon is a hard, relatively inert metalloid and in crystalline form is very brittle with a marked metallic luster. Silicon occurs mainly in nature as the oxide and as silicates. The solid form of silicon does not react with oxygen, water and most acids. Silicon reacts with …

Silicon is a chemical element with the atomic number 14 and the symbol "Si." Widely recognized for its central role in modern electronics and technology, it's hard to overstate silicon's significance. It is a metalloid, which means it has both metallic and non-metallic properties.