Element Niobium - Nb
Comprehensive data ~ above the chemical aspect Niobium is detailed on this page; including scores that properties, element names in countless languages, most recognized nuclides of Niobium. Typical chemical compounds room also detailed for countless elements. In addition technical terms are linked to your definitions and also the menu has links to related write-ups that space a good aid in one"s studies.
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Niobium MenuNiobium page OneOverview the NiobiumNiobium"s name in various other LanguagesAtomic framework of NiobiumChemical nature of NiobiumPhysical nature of NiobiumRegulatory / HealthWho/When/Where/HowNiobium web page TwoNuclides / IsotopesPotential parental Nuclides
Overview that NiobiumAtomic Number: 41Group: 5Period: 5Series: transition Metals
Niobium"s surname in various other LanguagesLatin: NiobiumCzech: NiobCroatian: NiobijFrench: NiobiumGerman: Niob - rItalian: NiobioNorwegian: NiobPortuguese: NióbioRussian: НиобийSpanish: NiobioSwedish: NiobAtomic structure of NiobiumAtomic Radius: 2.08ÅAtomic Volume: 10.87cm3/molCovalent Radius: 1.34ÅCross Section (Thermal neutron Capture) σa/barns: 1.15Crystal Structure: Cubic human body centered
Chemical properties of NiobiumElectrochemical Equivalent: 0.69327g/amp-hrElectron job-related Function: 4.3eVElectronegativity: 1.6 (Pauling); 1.23 (Allrod Rochow)Heat that Fusion: 26.4kJ/molIncompatibilities:Ionization PotentialFirst: 6.88Second: 14.32Third: 25.04Valence Electron Potential (-eV): 104
Physical nature of NiobiumAtomic mass Average: 92.90638Boiling Point: 5017K 4744°C 8571°FCoefficient of lineal thermal expansion/K-1: 7.07E-6ConductivityElectrical: 0.0693 106/cm ΩThermal: 0.537 W/cmKDensity: 8.57g/cc
300KDescription: shiny white soft shift metal. Niobium resists corrosion due to an oxide film on that surface.Elastic Modulus:Bulk: 170.3/GPaRigidity: 37.5/GPaYoungs: 104.9/GPaEnthalpy the Atomization: 745 kJ/mole
25°CEnthalpy of Fusion: 27.2 kJ/moleEnthalpy that Vaporization: 696.6 kJ/moleFlammablity Class:Freezing Point: see melting pointHardness ScaleBrinell: 736 MN m-2Mohs: 6Vickers: 1320 MN m-2Heat that Vaporization: 682kJ/molMelting Point: 2741K 2468°C 4474°FMolar Volume: 10.84 cm3/molePhysical State (at 20°C & 1atm): SolidSpecific Heat: 0.26J/gKVapor Pressure = 0.0755Pa
Regulatory / HealthCAS Number7440-03-1OSHA permit Exposure limit (PEL)No limits collection by OSHAOSHA PEL Vacated 1989No limits collection by OSHANIOSH recommended Exposure border (REL)No limits collection by NIOSH Levels In Humans:Note: this data represents naturally occuring level of aspects in the typical human, that DOES NOT represent recommended daily allowances.Blood/mg dm-3: 0.005Bone/p.p.m: Liver/p.p.m: 0.14Muscle/p.p.m: 0.14Daily diet Intake: 0.02-06 mgTotal fixed In Avg. 70kg human: 1.5 mgDiscovery Year: 1801Name Origin:From Niobe; daughter that the mythical Greek king Tantalus.Abundance of Niobium:Earth"s Crust/p.p.m.: 20Seawater/p.p.m.: 0.0000009Atmosphere/p.p.m.: N/ASun (Relative to H=1E12): 79Sources of Niobium:Found in columbite, samarskite and betafite ores. Additionally obtained as a by-product of tin-extraction. Yearly world large production is about 15,000 tons. Main mining areas are Australia, Zaire, Brazil, Russia, Norway, Canada and also Madagascar.Uses of Niobium: that is supplied in stainless stole alloys because that nuclear reactors, jets, missiles, cut tools, pipelines, super magnets and also welding rods.Additional Notes:
Niobium MenuNiobium page OneOverview of NiobiumNiobium"s name in other LanguagesAtomic structure of NiobiumChemical properties of NiobiumPhysical nature of NiobiumRegulatory / HealthWho/When/Where/HowNiobium page TwoNuclides / IsotopesPotential parent Nuclides
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