Element Tungsten - W
Comprehensive data top top the chemical element Tungsten is noted on this page; including scores of properties, facet names in countless languages, most well-known nuclides of Tungsten. Typical chemical compounds are also detailed for numerous elements. In addition technical terms are connected to your definitions and the menu contains links come related write-ups that space a good aid in one\"s studies.
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Tungsten MenuTungsten web page OneOverview the TungstenTungsten\"s name in various other LanguagesAtomic framework of TungstenChemical nature of TungstenPhysical nature of TungstenRegulatory / HealthWho/When/Where/HowTungsten page TwoNuclides / IsotopesPotential parental NuclidesTungsten page ThreeCommon chemical Compounds of Tungsten
Overview that TungstenAtomic Number: 74Group: 6Period: 6Series: change Metals
Tungsten\"s surname in various other LanguagesLatin: WolframiumCzech: WolframCroatian: VolframFrench: TungsténeGerman: Wolfram - rItalian: WolframioNorwegian: WolframPortuguese: TungstênioRussian: ВольфрамSpanish: WolframioSwedish: VolframAtomic framework of TungstenAtomic Radius: 2.02ÅAtomic Volume: 9.53cm3/molCovalent Radius: 1.3ÅCross Section (Thermal neutron Capture) σa/barns: 18.3Crystal Structure: Cubic human body centered
Chemical nature of TungstenElectrochemical Equivalent: 1.1432g/amp-hrElectron occupational Function: 4.55eVElectronegativity: 2.36 (Pauling); 1.4 (Allrod Rochow)Heat of Fusion: 35.4kJ/molIncompatibilities:Bromine trifluoride, chlorine trifluoride, fluorine, iodine pentafluorideIonization PotentialFirst: 7.98Valence Electron Potential (-eV): 140
Physical nature of TungstenAtomic massive Average: 183.85Boiling Point: 5928K 5655°C 10211°FCoefficient that lineal thermal expansion/K-1: 4.59E-6ConductivityElectrical: 0.189 106/cm ΩThermal: 1.74 W/cmKDensity: 19.35g/cc
300KDescription:Hard, silver-white metal that is generally derived as a dull grey powder the is hard to melt.Elastic Modulus:Bulk: 311/GPaRigidity: 160.5/GPaYoungs: 411/GPaEnthalpy of Atomization: 837 kJ/mole
25°CEnthalpy of Fusion: 35.23 kJ/moleEnthalpy of Vaporization: 799.1 kJ/moleFlammablity Class: CombustibleFreezing Point: see melting pointHardness ScaleBrinell: 2570 MN m-2Mohs: 7.5Vickers: 3430 MN m-2Heat the Vaporization: 824kJ/molMelting Point: 3680K 3407°C 6165°FMolar Volume: 9.5 cm3/moleOptical Reflectivity: 62%Physical State (at 20°C & 1atm): SolidSpecific Heat: 0.13J/gKVapor Pressure = 4.27Pa
Regulatory / HealthCAS Number7440-33-7RTECS: Y07175000OSHA permissible Exposure limit (PEL)No limits set by OSHAOSHA PEL Vacated 1989TWA: 5 mg/m3STEL: 10 mg/m3NIOSH recommended Exposure limit (REL)TWA: 5 mg/m3STEL: 10 mg/m3 Routes of Exposure: Inhalation; Ingestion; Skin and/or eye contactTarget Organs: Eyes, skin, respiratory system, bloodLevels In Humans:Note: this data represents naturally occuring levels of facets in the typical human, that DOES NOT represent recommended daily allowances.Blood/mg dm-3: 0.001Bone/p.p.m: 0.00025Liver/p.p.m: n/aMuscle/p.p.m: n/aDaily diet Intake: 0.001-0.015 mgTotal mass In Avg. 70kg human: 0.02 mg
Who / wherein / when / HowDiscoverer: Fausto and also Juan José de ElhuijarDiscovery Location: Vergara SpainDiscovery Year: 1783Name Origin:Swedish: tung sten (heavy stone): W symbol from its German surname wolfram i m sorry is called after wolframite.Abundance that Tungsten:Earth\"s Crust/p.p.m.: 160.6Seawater/p.p.m.: 0.000092Atmosphere/p.p.m.: 411Sun (Relative to H=1E12): 0.28Sources the Tungsten:Occurs in the mineral scheelite (CaWO4) and wolframite <(Fe,Mn)WO4>. Yearly world broad production is roughly 45,100 tons. Major mining locations are China, Malaysia, Burma, bolivia, canada, Australia, Japan and USA.Uses of Tungsten:Used widely in the electronics industry. Made into filaments for vacuum tubes and also electric lights. Also used in contact points in cars, welding electrodes, rocket nozzles and cutting tools. Linked with calcium or magnesium it renders phosphors.Additional Notes:Some sources offer the German chemist karl Wilhelm Scheele together the very first to isolation the steel in 1880, however most resources credit the Elhuijar brothers.
Tungsten MenuTungsten web page OneOverview that TungstenTungsten\"s name in other LanguagesAtomic framework of TungstenChemical nature of TungstenPhysical properties of TungstenRegulatory / HealthWho/When/Where/HowTungsten web page TwoNuclides / IsotopesPotential parental NuclidesTungsten web page ThreeCommon chemical Compounds that Tungsten
A perform of reference sources supplied to translate into the data listed on our periodic table of facets can be found on the key periodic table page.
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