Archives : September-2020

Cobalt From Wikipedia, the free encyclopedia Jump to navigationJump to search This article is about the chemical element. For other uses, see Cobalt (disambiguation). Cobalt, 27Co Cobalt Pronunciation /ˈkoʊbɒlt/ (listen)[1] Appearance hard lustrous bluish gray metal Standard atomic weight Ar, std(Co) 58.933194(3)[2] Cobalt in the periodic table Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon ..

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Galena From Wikipedia, the free encyclopedia Jump to navigationJump to search For other uses, see Galena (disambiguation). Galena (lead glance) Galena close-up General Category Sulfide mineral, octahedral subgroup Formula (repeating unit) PbS Strunz classification 2.CD.10 Dana classification 2.8.1.1 Crystal system Cubic Crystal class Hexoctahedral (m3m) H–M symbol: (4/m 3 2/m) Space group Fm3m Unit cell a = 5.936 Å; Z = 4 Identification ..

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Neutron This article is about the subatomic particle. For other uses, see Neutron (disambiguation). Neutron The quark content of the neutron. The color assignment of individual quarks is arbitrary, but all three colors must be present. Forces between quarks are mediated by gluons. Classification Baryon Composition 1 up quark, 2 down quarks Statistics Fermionic Interactions Gravity, weak, strong, electromagnetic Symbol n , n0 , ..

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Proton From Wikipedia, the free encyclopedia Jump to navigationJump to search This article is about the proton as a subatomic particle. For other uses, see Proton (disambiguation). Proton The quark content of a proton. The color assignment of individual quarks is arbitrary, but all three colors must be present. Forces between quarks are mediated by gluons. Classification Baryon Composition 2 up quarks (u), ..

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Supernova nucleosynthesis Supernova nucleosynthesis is the nucleosynthesis of chemical elements in supernova explosions. In sufficiently massive stars, the nucleosynthesis by fusion of lighter elements into heavier ones occurs during sequential hydrostatic burning processes called helium burning, carbon burning, oxygen burning, and silicon burning, in which the byproducts of one nuclear fuel become, after compressional heating, the fuel for the subsequent burning stage. During hydrostatic burning these ..

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Dislocation From Wikipedia, the free encyclopedia Jump to navigationJump to search For the syntactic operation, see Dislocation (syntax). For the medical term, see Joint dislocation. An edge-dislocation (b = Burgers vector) In materials science, a dislocation or Taylor’s dislocation is a linear crystallographic defect or irregularity within a crystal structure that contains an abrupt change in the arrangement of atoms. The movement of dislocations allow atoms to ..

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Sodium From Wikipedia, the free encyclopedia Jump to navigationJump to search This article is about the chemical element. For the nutrient commonly called sodium, see salt. For the use of sodium as a medication, see Saline (medicine). For other uses, see sodium (disambiguation). “Natrium” redirects here. For other uses, see Natrium (disambiguation). Sodium, 11Na Sodium Appearance silvery white metallic Standard ..

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Samarium From Wikipedia, the free encyclopedia Jump to navigationJump to search Samarium, 62Sm Samarium Pronunciation /səˈmɛəriəm/ ​(sə-MAIR-ee-əm) Appearance silvery white Standard atomic weight Ar, std(Sm) 150.36(2)[1] Samarium in the periodic table Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper ..

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Uranium From Wikipedia, the free encyclopedia Jump to navigationJump to search This article is about the chemical element. For other uses, see Uranium (disambiguation). Uranium, 92U Uranium Pronunciation /jʊəˈreɪniəm/ ​(ewr-AY-nee-əm) Appearance silvery gray metallic; corrodes to a spalling black oxide coat in air Standard atomic weight Ar, std(U) 238.02891(3)[1] Uranium in the periodic table Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine ..

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Thorium From Wikipedia, the free encyclopedia Jump to navigationJump to search Thorium, 90Th Thorium Pronunciation /ˈθɔːriəm/ ​(THOR-ee-əm) Appearance silvery, often with black tarnish Standard atomic weight Ar, std(Th) 232.0377(4)[1] Thorium in the periodic table Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron ..

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