Element Cesium - Cs

Comprehensive data top top the chemical aspect Cesium is noted on this page; including scores the properties, facet names in numerous languages, most recognized nuclides the Cesium. Typical chemical compounds are also noted for many elements. In addition technical state are connected to your definitions and the menu includes links come related write-ups that space a great aid in one"s studies.

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Cesium Menu

Cesium web page OneOverview of CesiumCesium"s surname in other LanguagesAtomic framework of CesiumChemical properties of CesiumPhysical nature of CesiumRegulatory / HealthWho/When/Where/HowCesium web page TwoNuclides / IsotopesPotential parent NuclidesCesium web page ThreeCommon chemistry Compounds that Cesium

Overview of Cesium

Atomic Number: 55Group: 1Period: 6Series: Alkali Metals

Cesium"s surname in other Languages

Latin: CaesiumCzech: CesiumCroatian: CezijFrench: CésiumGerman: Zäsium - sItalian: CesioNorwegian: CesiumPortuguese: CésioRussian: ЦеэийSpanish: CesioSwedish: CesiumAtomic structure of CesiumAtomic Radius: 3.34ÅAtomic Volume: 71.07cm3/molCovalent Radius: 2.35ÅCross Section (Thermal ghost Capture)σa/barns: 29Crystal Structure: Cubic body centered
Electron Configuration:1s2 2s2p6 3s2p6d10 4s2p6d10 5s2p6 6s1Electrons per energy Level: 2,8,18,18,8,1Shell Model
Ionic Radius:
1.67ÅFilling Orbital: 6s1Number of electrons (with no charge): 55Number of neutrons (most common/stable nuclide): 78Number the Protons: 55Oxidation States: 1Valence Electrons: 6s1Electron period Model

Chemical nature of Cesium

Electrochemical Equivalent:
4.9587g/amp-hrElectron work Function: 2.14eVElectronegativity: 0.79 (Pauling); 0.86 (Allrod Rochow)Heat that Fusion: 2.092kJ/molIncompatibilities:Ionization PotentialFirst: 3.894Second: 25.1Valence Electron Potential (-eV): 8.62

Physical nature of Cesium

Atomic massive Average: 132.9054Boiling Point: 944K 671°C 1240°FCoefficient that lineal heat expansion/K-1: 97E-6ConductivityElectrical: 0.0489 106/cm ΩThermal: 0.359 W/cmKDensity: 1.873g/cc
300KDescription:Soft light silvery-white alkali metal.Elastic Modulus:Bulk: 1.6/GPaRigidity: 0.65/GPaYoungs: 1.7/GPaEnthalpy of Atomization: 78.2 kJ/mole
25°CEnthalpy the Fusion: 2.1 kJ/moleEnthalpy the Vaporization: 65.9 kJ/moleFlammablity Class:Freezing Point: see melt pointHardness ScaleBrinell: 0.14 MN m-2Mohs: 0.2Heat of Vaporization: 67.74kJ/molMelting Point: 301.7K 28.55°C 83.39°FMolar Volume: 70.73 cm3/molePhysical State (at 20°C & 1atm): SolidSpecific Heat: 0.24J/gKVapor Pressure 2.5kPa

Regulatory / Health

CAS Number7440-46-2RTECS: FK9225000OSHA permissible Exposure border (PEL)No limits set by OSHAOSHA PEL Vacated 1989No limits collection by OSHANIOSH encourage Exposure border (REL)No limits set by NIOSH Levels In Humans:Note: this data represents normally occuring levels of aspects in the common human, it DOES NOT represent recommended daily allowances.Blood/mg dm-3: 0.0038Bone/p.p.m: 0.013-0.052Liver/p.p.m: 0.04-0.05Muscle/p.p.m: 0.07-1.6Daily dietary Intake: 0.004-0.03 mgTotal fixed In Avg. 70kg human: 6 mg

Who / whereby / when / How

Discoverer: Gustov R. Kirchoff, Robert BunsenDiscovery Location: Heidelberg GermanyDiscovery Year: 1860Name Origin: Latin: caesius (sky blue); its salts rotate flames blue.Abundance that Cesium:Earth"s Crust/p.p.m.: 3Seawater/p.p.m.: 0.0003Atmosphere/p.p.m.: N/ASun (Relative to H=1E12): 80Sources the Cesium:Found in pollucite <(Cs4Al4Si9O26).H2O> and as trace in lepidolite. World production is approximately 20 tons per year. Major mining areas are in Bernic Lake (Manitoba, Canada), Bikita (Zimbabwe) and South-West Africa.Uses the Cesium:Used as a "getter" to eliminate air traces in vacuum tubes. Due to the fact that it ionizes readily, it is offered as an ion rocket engine propellant. Additionally used in photoelectric cells, atom clocks, infared lamps.Additional Notes:Cesium deserve to have very serious results on the body if bring away in excess.

Cesium Menu

Cesium web page OneOverview of CesiumCesium"s name in various other LanguagesAtomic structure of CesiumChemical nature of CesiumPhysical nature of CesiumRegulatory / HealthWho/When/Where/HowCesium web page TwoNuclides / IsotopesPotential parental NuclidesCesium web page ThreeCommon chemistry Compounds that Cesium


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