Element Rhodium - Rh

Comprehensive data top top the chemical facet Rhodium is noted on this page; consisting of scores that properties, facet names in many languages, most recognized nuclides of Rhodium. Usual chemical compounds are also provided for many elements. In addition technical terms are linked to your definitions and the menu has links come related short articles that space a an excellent aid in one"s studies.

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Rhodium Menu

Rhodium page OneOverview that RhodiumRhodium"s name in various other LanguagesAtomic structure of RhodiumChemical properties of RhodiumPhysical nature of RhodiumRegulatory / HealthWho/When/Where/HowRhodium page TwoNuclides / IsotopesPotential parental NuclidesRhodium web page ThreeCommon chemistry Compounds that Rhodium

Overview the Rhodium

Atomic Number: 45Group: 9Period: 5Series: shift Metals

Rhodium"s surname in other Languages

Latin: RhodiumCzech: RhodiumCroatian: RodijFrench: RhodiumGerman: Rhodium - sItalian: RodioNorwegian: RhodiumPortuguese: RódioRussian: РодийSpanish: RodioSwedish: RodiumAtomic structure of RhodiumAtomic Radius: 1.83ÅAtomic Volume: 8.3cm3/molCovalent Radius: 1.25ÅCross Section (Thermal neutron Capture) σa/barns: 144.8Crystal Structure: Cubic confront centered
Electron Configuration:1s2 2s2p6 3s2p6d10 4s2p6d8 5s1Electrons per energy Level: 2,8,18,16,1Shell Model
Ionic Radius:
0.68ÅFilling Orbital: 4d8Number of electrons (with no charge): 45Number of neutron (most common/stable nuclide): 58Number that Protons: 45Oxidation States: 2,3,4Valence Electrons: 4d8 5s1

Chemical nature of Rhodium

Electrochemical Equivalent: 1.2798g/amp-hrElectron job-related Function: 4.98eVElectronegativity: 2.28 (Pauling); 1.45 (Allrod Rochow)Heat of Fusion: 21.5kJ/molIncompatibilities:Chlorine trifluoride, oxygen difluorideIonization PotentialFirst: 7.46Second: 18.08Third: 31.06Valence Electron Potential (-eV): 64

Physical properties of Rhodium

Atomic mass Average: 102.9055Boiling Point: 4000K 3727°C 6741°FCoefficient the lineal heat expansion/K-1: 8.4E-6ConductivityElectrical: 0.211 106/cm ΩThermal: 1.5 W/cmKDensity: 12.41g/cc
300KDescription:Hard silver- white metal that is unaffected through air and also water as much as 875K. It is additionally unaffected by acids however is attacked by multen alkalis.Elastic Modulus:Bulk: 276/GPaRigidity: 147/GPaYoungs: 379/GPaEnthalpy of Atomization: 556.5 kJ/mole
25°CEnthalpy of Fusion: 21.76 kJ/moleEnthalpy of Vaporization: 495.4 kJ/moleFlammablity Class: Non-combustible solid (except as dust)Freezing Point: see melting pointHardness ScaleBrinell: 1100 MN m-2Mohs: 6Vickers: 1246 MN m-2Heat that Vaporization: 493kJ/molMelting Point: 2239K 1966°C 3571°FMolar Volume: 8.3 cm3/moleOptical Reflectivity: 84%Physical State (at 20°C & 1atm): SolidSpecific Heat: 0.242J/gKVapor Pressure = 0.633Pa

Regulatory / Health

CAS Number7440-16-6RTECS: VI9069000OSHA permit Exposure limit (PEL)TWA: 0.1 mg/m3OSHA PEL Vacated 1989TWA: 0.1 mg/m3NIOSH encourage Exposure limit (REL)TWA: 0.1 mg/m3IDLH: 100 mg/m3 Routes of Exposure: InhalationTarget Organs: respiratory tract systemLevels In Humans:Note: this data represents normally occuring levels of elements in the common human, it DOES NOT represent recommended daily allowances.Blood/mg dm-3: n/aBone/p.p.m: n/aLiver/p.p.m: n/aMuscle/p.p.m: n/aDaily dietary Intake: n/aTotal mass In Avg. 70kg human: n/a

Who / wherein / when / How

Discoverer: william H. WollastonDiscovery Location: London EnglandDiscovery Year: 1803Name Origin:Greek: rhodon (rose). That is salts give a rose solution.Abundance the Rhodium:Earth"s Crust/p.p.m.: 0.0002Seawater/p.p.m.: N/AAtmosphere/p.p.m.: N/ASun (Relative to H=1E12): 25.1Sources of Rhodium:Obtained as a by-product of nickel production. Rhodium is found in its aboriginal state in Montana USA. Around three lots of Rhodium are developed world wide on an yearly basis.Uses that Rhodium:Used as a coating to avoid wear on high quality science equipment and also with platinum to do thermocouples. Additionally used in headlight reflectors, thelephone relays, spring pen points and plane spark plugs.Additional Notes:

Rhodium Menu

Rhodium page OneOverview of RhodiumRhodium"s name in other LanguagesAtomic framework of RhodiumChemical nature of RhodiumPhysical nature of RhodiumRegulatory / HealthWho/When/Where/HowRhodium web page TwoNuclides / IsotopesPotential parental NuclidesRhodium web page ThreeCommon chemistry Compounds the Rhodium


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