Element Cobalt - Co

Comprehensive data top top the chemical aspect Cobalt is detailed on this page; consisting of scores that properties, facet names in many languages, most well-known nuclides that Cobalt. Common chemical compounds space also detailed for many elements. In enhancement technical state are connected to their definitions and also the menu has links to related articles that space a great aid in one"s studies.

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Cobalt Menu

Cobalt page OneOverview of CobaltCobalt"s surname in other LanguagesAtomic structure of CobaltChemical nature of CobaltPhysical nature of CobaltRegulatory / HealthWho/When/Where/HowCobalt web page TwoNuclides / IsotopesPotential parent NuclidesCobalt web page ThreeCommon chemical Compounds that Cobalt

Overview of Cobalt

Atomic Number: 27Group: 9Period: 4Series: transition Metals

Cobalt"s name in other Languages

Latin: CobaltumCzech: KobaltCroatian: KobaltFrench: CobaltGerman: Kobalt - rItalian: CobaltoNorwegian: KoboltPortuguese: CobaltoRussian: КобальтSpanish: CobaltoSwedish: KoboltAtomic framework of CobaltAtomic Radius: 1.67ÅAtomic Volume: 6.7cm3/molCovalent Radius: 1.16ÅCross Section (Thermal spirit Capture)σa/barns: 37.2Crystal Structure: Hexagonal
Electron Configuration:1s2 2s2p6 3s2p6d7 4s2Electrons per power Level: 2,8,15,2Shell Model
Ionic Radius:
0.745ÅFilling Orbital: 3d7Number of electron (with no charge): 27Number of neutrons (most common/stable nuclide): 32Number of Protons: 27Oxidation States: 2,3Valence Electrons: 3d7 4s2

Chemical properties of Cobalt

Electrochemical Equivalent: 1.0994g/amp-hrElectron work-related Function: 5eVElectronegativity: 1.88 (Pauling); 1.7 (Allrod Rochow)Heat that Fusion: 16.19kJ/molIncompatibilities:Strong oxidizers, ammonium nitrateIonization PotentialFirst: 7.86Second: 17.06Third: 33.5Valence Electron Potential (-eV): 38.7

Physical nature of Cobalt

Atomic fixed Average: 58.9332Boiling Point: 3143K 2870°C 5198°FCoefficient of lineal thermal expansion/K-1: 13.36E-6ConductivityElectrical: 0.172 106/cm ΩThermal: 1 W/cmKDensity: 8.9g/cc
300KDescription:Tough silver-white shift metal.Elastic Modulus:Bulk: 181.5/GPaRigidity: 82/GPaYoungs: 211/GPaEnthalpy the Atomization: 26.8 kJ/mole
25°CEnthalpy the Fusion: 15.23 kJ/moleEnthalpy of Vaporization: 382.4 kJ/moleFlammablity Class: Non-combustible heavy (except as dust)Freezing Point: see melt pointHardness ScaleBrinell: 700 MN m-2Mohs: 5Vickers: 1043 MN m-2Heat that Vaporization: 376.5kJ/molMelting Point: 1768K 1495°C 2723°FMolar Volume: 6.61 cm3/moleOptical Reflectivity: 67%Physical State (at 20°C & 1atm): SolidSpecific Heat: 0.42J/gKVapor Pressure = 175Pa

Regulatory / Health

CAS Number7440-48-4RTECS: GF8750000OSHA allow Exposure limit (PEL)TWA: 0.1 mg/m3OSHA PEL Vacated 1989TWA: 0.05 mg/m3NIOSH recommended Exposure limit (REL)TWA: 0.05 mg/m3IDLH: 20 mg/m3 Routes that Exposure: Inhalation; Ingestion; Skin and/or eye contactTarget Organs: Skin, respiratory tract systemLevels In Humans:Note: this data represents naturally occuring level of aspects in the usual human, the DOES NOT represent recommended day-to-day allowances.Blood/mg dm-3: 0.0002-0.04Bone/p.p.m: 0.01-0.04Liver/p.p.m: 0.06-1.1Muscle/p.p.m: 0.028-0.65Daily dietary Intake: 0.005-1.8 mgTotal mass In Avg. 70kg human: 3 mg

Who / wherein / once / How

Discoverer: George BrandtDiscovery Location: Stockholm SwedenDiscovery Year: 1735Name Origin: German: kobalt or kobold (evil spirit); Greek: cobalos (mines).Abundance of Cobalt:Earth"s Crust/p.p.m.: 20Seawater/p.p.m.: Atlantic Suface: N/AAtlantic Deep: N/APacific Surface: 0.0000069Pacific Deep: 0.0000011Atmosphere/p.p.m.: N/ASun (Relative come H=1E12): 79400Sources the Cobalt:Occurs in compounds through arsenic, oxygen and sulfur together in cobaltine (CoAsS) and linneite (Co3S4). Annual world production is approximately 17,000 tons. Major mining locations are in Zaire, Morocco, Sweden and Canada.Uses the Cobalt:Used in numerous hard alloys; for magnets, ceramics and special glasses. Likewise used in irreversible magnets, razor blades and also catalitic converters. Cobalt-60 is offered in cancer therapy.Additional Notes:

Cobalt Menu

Cobalt page OneOverview that CobaltCobalt"s surname in other LanguagesAtomic structure of CobaltChemical nature of CobaltPhysical nature of CobaltRegulatory / HealthWho/When/Where/HowCobalt web page TwoNuclides / IsotopesPotential parent NuclidesCobalt page ThreeCommon chemical Compounds that Cobalt


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