Element Tungsten - W

Comprehensive data ~ above the chemical aspect Tungsten is provided on this page; consisting of scores the properties, element names in numerous languages, most known nuclides the Tungsten. Typical chemical compounds room also noted for plenty of elements. In addition technical state are attached to their definitions and the menu contains links come related short articles that space a an excellent aid in one"s studies.

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Tungsten Menu

Tungsten web page OneOverview of TungstenTungsten"s surname in various other LanguagesAtomic framework of TungstenChemical nature of TungstenPhysical nature of TungstenRegulatory / HealthWho/When/Where/HowTungsten page TwoNuclides / IsotopesPotential parent NuclidesTungsten page ThreeCommon chemistry Compounds the Tungsten

Overview of Tungsten

Atomic Number: 74Group: 6Period: 6Series: change Metals

Tungsten"s surname in other Languages

Latin: WolframiumCzech: WolframCroatian: VolframFrench: TungsténeGerman: Wolfram - rItalian: WolframioNorwegian: WolframPortuguese: TungstênioRussian: ВольфрамSpanish: WolframioSwedish: VolframAtomic structure of TungstenAtomic Radius: 2.02ÅAtomic Volume: 9.53cm3/molCovalent Radius: 1.3ÅCross Section (Thermal ghost Capture) σa/barns: 18.3Crystal Structure: Cubic body centered
Electron Configuration:1s2 2s2p6 3s2p6d10 4s2p6d10f14 5s2p6d4 6s2Electrons per energy Level: 2,8,18,32,12,2Shell Model
Ionic Radius:
0.62ÅFilling Orbital: 5d4Number of electrons (with no charge): 74Number of neutron (most common/stable nuclide): 110Number that Protons: 74Oxidation States: 6,5,4,3,2Valence Electrons: 5d4 6s2Electron period Model

Chemical properties of Tungsten

Electrochemical Equivalent:
1.1432g/amp-hrElectron job-related Function: 4.55eVElectronegativity: 2.36 (Pauling); 1.4 (Allrod Rochow)Heat the Fusion: 35.4kJ/molIncompatibilities:Bromine trifluoride, chlorine trifluoride, fluorine, iodine pentafluorideIonization PotentialFirst: 7.98Valence Electron Potential (-eV): 140

Physical nature of Tungsten

Atomic massive Average: 183.85Boiling Point: 5928K 5655°C 10211°FCoefficient the lineal thermal expansion/K-1: 4.59E-6ConductivityElectrical: 0.189 106/cm ΩThermal: 1.74 W/cmKDensity: 19.35g/cc
300KDescription:Hard, silver-white steel that is generally obtained as a dull grey powder that is hard to melt.Elastic Modulus:Bulk: 311/GPaRigidity: 160.5/GPaYoungs: 411/GPaEnthalpy of Atomization: 837 kJ/mole
25°CEnthalpy the Fusion: 35.23 kJ/moleEnthalpy of Vaporization: 799.1 kJ/moleFlammablity Class: CombustibleFreezing Point: see melt pointHardness ScaleBrinell: 2570 MN m-2Mohs: 7.5Vickers: 3430 MN m-2Heat of 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 / Health

CAS Number7440-33-7RTECS: Y07175000OSHA permissible Exposure limit (PEL)No limits set by OSHAOSHA PEL Vacated 1989TWA: 5 mg/m3STEL: 10 mg/m3NIOSH encourage Exposure limit (REL)TWA: 5 mg/m3STEL: 10 mg/m3 Routes of Exposure: Inhalation; Ingestion; Skin and/or eye contactTarget Organs: Eyes, skin, respiratory tract system, bloodLevels In Humans:Note: this data represents naturally occuring level of facets in the common human, the DOES NOT represent recommended day-to-day 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 massive In Avg. 70kg human: 0.02 mg

Who / whereby / when / How

Discoverer: Fausto and Juan José de ElhuijarDiscovery Location: Vergara SpainDiscovery Year: 1783Name Origin:Swedish: tung sten (heavy stone): W symbol native its German surname wolfram i beg your pardon 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 that Tungsten:Occurs in the minerals scheelite (CaWO4) and also wolframite <(Fe,Mn)WO4>. Annual world vast production is around 45,100 tons. Main mining areas are China, Malaysia, Burma, bolivia, canada, Australia, Japan and USA.Uses the Tungsten:Used commonly in the electronics industry. Made into filaments for vacuum tubes and also electric lights. Likewise used in contact points in cars, welding electrodes, rocket nozzles and also cutting tools. Combined with calcium or magnesium it renders phosphors.Additional Notes:Some sources offer the German chemist karl Wilhelm Scheele together the first to isolation the steel in 1880, but most resources credit the Elhuijar brothers.

Tungsten Menu

Tungsten page OneOverview that TungstenTungsten"s name in other LanguagesAtomic structure of TungstenChemical properties of TungstenPhysical nature of TungstenRegulatory / HealthWho/When/Where/HowTungsten page TwoNuclides / IsotopesPotential parent NuclidesTungsten web page ThreeCommon chemical Compounds the Tungsten


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