Primary mining areas are Austria, Italy, India, South Africa, Australia, Canada, USA, Brazil. Approximate annual world production wide production: electronics grade pure silicon, 5000 tons metallurgical grade, 480,000 tons ferrosilicon, 3,400,000. Makes up major portion of clay, granite, quartz (SiO 2), and sand. Sources of Silicon: Silicon is the second most abundant element and comprises 25% of the earth's crust.Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances. Target Organs: Eyes, skin, respiratory system.Routes of Exposure: Inhalation Ingestion Skin and/or eye contact.TWA: 10 mg/m 3 total particulate 5 mg/m 3 respirable particulate.TWA: 15 mg/m 3 total particulate 5 mg/m 3 respirable particulate.Vapor Pressure = C Regulatory / Health.Flammablity Class: Combustible Solid in powder form. Enthalpy of Atomization: 439.3 kJ/mole 25☌.Conductivity Electrical: 2.52E -12 10 6/cm Ω.Coefficient of lineal thermal expansion/K -1: 4.2E -6.Valence Electron Potential (-eV): 144 Physical Properties of Silicon.Incompatibilities: Chlorine, fluorine, oxidizers, calcium, cesium carbide, alkaline carbonates.Electronegativity: 1.9 (Pauling) 1.74 (Allrod Rochow).Electrochemical Equivalent: 0.26197g/amp-hr.Valence Electrons: 3s 2p 2 Electron Dot Model.Number of Neutrons (most common/stable nuclide): 14.Number of Electrons (with no charge): 14.Electrons per Energy Level: 2,8,4 Shell Model.Electron Configuration: 1s 2 2s 2p 6 3s 2p 2.Crystal Structure: Cubic face centered.Cross Section (Thermal Neutron Capture) σ a/ barns : 0.171.Swedish: Kisel Atomic Structure of Silicon.Series: Metalloids ( Nonmetal) Silicon's Name in Other Languages.Common Chemical Compounds of Silicon Overview of Silicon.In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies. Common chemical compounds are also provided for many elements. Skip to site menu on this page Periodic Table of Elements Element Silicon - SiĬomprehensive data on the chemical element Silicon is provided on this page including scores of properties, element names in many languages, most known nuclides of Silicon.
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