Element Barium - Ba

Comprehensive data top top the chemical element Barium is listed on this page; including scores the properties, element names in numerous languages, most well-known nuclides the Barium. Common chemical compounds space also listed for countless elements. In addition technical terms are attached to their definitions and the menu contains links to related short articles that are a an excellent aid in one"s studies.

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Barium Menu

Barium web page OneOverview the BariumBarium"s surname in other LanguagesAtomic structure of BariumChemical properties of BariumPhysical nature of BariumRegulatory / HealthWho/When/Where/HowBarium web page TwoNuclides / IsotopesPotential parent NuclidesBarium page ThreeCommon chemistry Compounds that Barium

Overview the Barium

Atomic Number: 56Group: 2Period: 6Series: Alkali earth Metals

Barium"s name in other Languages

Latin: BaryumCzech: BaryumCroatian: BarijFrench: BaryumGerman: Barium - sItalian: BarioNorwegian: BariumPortuguese: BárioRussian: БарийSpanish: BarioSwedish: BariumAtomic structure of BariumAtomic Radius: 2.78ÅAtomic Volume: 39.24cm3/molCovalent Radius: 1.98ÅCross Section (Thermal spirit Capture)σa/barns: 1.3Crystal Structure: Cubic human body centered
Electron Configuration:1s2 2s2p6 3s2p6d10 4s2p6d10 5s2p6 6s2Electrons per energy Level: 2,8,18,18,8,2Shell Model
Ionic Radius:
1.35ÅFilling Orbital: 6s2Number of electrons (with no charge): 56Number of neutrons (most common/stable nuclide): 81Number that Protons: 56Oxidation States: 2Valence Electrons: 6s2Electron dot Model

Chemical properties of Barium

Electrochemical Equivalent:
2.5621g/amp-hrElectron job-related Function: 2.7eVElectronegativity: 0.89 (Pauling); 0.97 (Allrod Rochow)Heat that Fusion: 7.75kJ/molIncompatibilities:Ionization PotentialFirst: 5.212Second: 10.004Valence Electron Potential (-eV): 21.3

Physical properties of Barium

Atomic massive Average: 137.327Boiling Point: 2171K 1898°C 3448°FCoefficient that lineal heat expansion/K-1: 18.1E-6ConductivityElectrical: 0.03 106/cm ΩThermal: 0.184 W/cmKDensity: 3.59g/cc
300KDescription:Soft heavy silver colored metal.Elastic Modulus:Bulk: 9.6/GPaRigidity: 4.86/GPaYoungs: 12.8/GPaEnthalpy of Atomization: 175.7 kJ/mole
25°CEnthalpy that Fusion: 7.66 kJ/moleEnthalpy that Vaporization: 140 kJ/moleFlammablity Class:Freezing Point: see melt pointHardness ScaleMohs: 1.25Heat of Vaporization: 142kJ/molMelting Point: 1002K 729°C 1344°FMolar Volume: 38.21 cm3/molePhysical State (at 20°C & 1atm): SolidSpecific Heat: 0.204J/gKVapor Pressure = 98Pa

Regulatory / Health

CAS Number7440-39-3RTECS: CQ8370000NFPA 704Health: 2Fire: 2Reactivity:Special Hazard: OSHA permissible Exposure limit (PEL)No limits collection by OSHAOSHA PEL Vacated 1989No limits collection by OSHANIOSH recommended Exposure limit (REL)No limits collection by NIOSH Levels In Humans:Note: this data represents naturally occuring levels of elements in the usual human, it DOES NOT stand for recommended daily allowances.Blood/mg dm-3: 0.068Bone/p.p.m: 3-70Liver/p.p.m: 0.04-1.2Muscle/p.p.m: 0.09Daily diet Intake: 0.6-1.7 mgTotal fixed In Avg. 70kg human: 22 mg

Who / where / when / How

Discoverer: teacher Humphrey DavyDiscovery Location: London EnglandDiscovery Year: 1808Name Origin:Greek: barys (heavy or dense).Abundance of Barium:Earth"s Crust/p.p.m.: 500Seawater/p.p.m.: Atlantic Suface: 0.0047Atlantic Deep: 0.0093Pacific Surface: 0.0047Pacific Deep: 0.02Atmosphere/p.p.m.: N/ASun (Relative come H=1E12): 123Sources the Barium:Found in barytine (BaSO4) and also witherite (BaCO3),never uncovered in pure kind due to its reactivity. Total annual world manufacturing estimated around 6,000,000 tons. Key mining locations are UK, Italy, Czech Republic, USA and Germany. Total human being reserves estimated to be about 450,000,000 tons.Uses that Barium:Used in sparkplugs, vacuum tubes, fireworks, fluorescent lamps. Insoluble barium sulfate is offered for body imaging.Additional Notes:Must be stored under kerosene to continue to be pure. Soluble barium salt are highly toxic.

Barium Menu

Barium page OneOverview that BariumBarium"s surname in other LanguagesAtomic framework of BariumChemical nature of BariumPhysical properties of BariumRegulatory / HealthWho/When/Where/HowBarium web page TwoNuclides / IsotopesPotential parent NuclidesBarium web page ThreeCommon chemistry Compounds of Barium


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