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Silicon - Wikipedia

Silicon is a chemical element with the symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic luster, and is a tetravalent metalloid 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 unreactive.

作者: en.m.wikipedia.org

Silicon | Element, Atom, Properties, Uses, & Facts

silicon (Si), a nonmetallic chemical element in the carbon family (Group 14 [IVa] of the periodic table). Silicon makes up 27.7 percent of Earth’s crust; it is the second most abundant element in the crust, being surpassed only by oxygen. The name silicon derives from the Latin silex or silicis, meaning “flint” or “hard stone.” Amorphous elemental silicon was first isolated and ...

作者: www.britannica.com

Silicon | Si - PubChem

In 36 patients suffering from chronic renal failure (mean creatinine clearance 26 mL/min), serum silicon levels were significantly increased (mean 0.52 microgram/mL compared with 0.265 microgram/mL in normals; p less than 0.005). Urinary silicon excretion per 24 hr was significantly decreased (15.71 mg/24 hr compared with 21.4 mg/24 hr in normals; p less than 0.001).

作者: pubchem.ncbi.nlm.nih.gov

Silicon - Element information, properties and uses

Specific heat capacity (J kg −1 K −1) Specific heat capacity is the amount of energy needed to change the temperature of a kilogram of a substance by 1 K. Young's modulus. A measure of the stiffness of a substance. It provides a measure of how difficult it is to extend a material, with a value given by the ratio of tensile …

作者: www.rsc.org

Silicone - Wikipedia

A silicone or polysiloxane is a polymer made up of siloxane (−R 2 Si−O−SiR 2 −, where R = organic group). They are typically colorless oils or rubber -like substances. Silicones are used in sealants, adhesives, lubricants, medicine, cooking utensils, thermal insulation, and electrical insulation. Some common forms include silicone oil ...

作者: en.m.wikipedia.org

SILICON: Overview, Uses, Side Effects, Precautions

Silicon is a naturally occurring mineral. It's the second-most abundant element on earth after oxygen. Food sources include water, fruits, and vegetables.

作者: www.webmd.com

Silicone | Definition, Composition, Properties, Uses, & Facts

Dec 30, 2022 · silicone, also called polysiloxane, any of a diverse class of fluids, resins, or elastomers based on polymerized siloxanes, substances whose molecules consist of chains made of alternating silicon and oxygen atoms. Their chemical inertness, resistance to water and oxidation, and stability at both high and low temperatures have led to a wide range of commercial applications, from …

作者: www.britannica.com

Silicon Definition & Meaning - Merriam-Webster

Jan 4, 2023 · silicon: [noun] a tetravalent nonmetallic element that occurs combined as the most abundant element next to oxygen in the earth's crust and is used especially in ferrosilicon for steelmaking, in other alloys, and in semiconductors — see Chemical Elements Table.

作者: www.merriam-webster.com

Silicon, Inc. | Global Technology Powerhouse

Silicon Cloud services help you securely move the right workload to the cloud and rapidly modernize and integrate applications using private cloud, public cloud & legacy infrastructure. Engineering. Our services cover the entire process of creating a product, from ideas and innovation through systems engineering to …

作者: silicon.inc

10 Silicon Facts (Element Number 14 or Si) - ThoughtCo

Jul 1, 2018 · Silicon has a high thermal conductivity and conducts heat well. Unlike metals, it's brittle, and not malleable or ductile. Like carbon, it usually has a valence of 4 (tetravalent), but unlike carbon, silicon can also form five or six bonds. Silicon is the second most abundant element on Earth by mass, making up over 27% of …

作者: www.thoughtco.com