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Title: Chemistry/Elements/Rhenium - EnvironmentalChemistry.com: Rhenium Atomic structure, chemical and physical properties, and table of nuclides.
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Periodic Table of Elements: Rhenium – Re (EnvironmentalChemistry.com)
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Periodic Table of ElementsElement Rhenium – ReComprehensive data on the chemical element Rhenium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Rhenium.
Common chemical compounds are also provided for many elements. In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one studies.
Using the "Periodic Table of Elements Quick Navigation" graphic at the bottom of the sidebar menu, one can quickly jump from chemical element to chemical element.
Rhenium Menu
Rhenium Page One
Overview of Rhenium
Rhenium's Name in Other Languages
Atomic Structure of Rhenium
Chemical Properties of Rhenium
Physical Properties of Rhenium
Regulatory / Health
Who/When/Where/How
Rhenium Page Two
Nuclides / Isotopes
Potential Parent Nuclides
Overview of Rhenium
Atomic Number:75
Group: 7
Period: 6
Series: Transition Metals
Rhenium's Name in Other LanguagesLatin: RheniumCzech: RheniumCroatian: RenijFrench:
RhéniumGerman: Rhenium - sItalian: RenioNorwegian: RheniumPortuguese: Rênio
Russian:  Spanish: RenioSwedish:
Rhenium
Atomic Structure of Rhenium
Atomic Radius: 1.97Å
Atomic Volume: 8.85cm3/mol
Covalent Radius: 1.28Å
Cross Section (Thermal Neutron Capture)  a/barns: 89.7
Crystal Structure: Hexagonal
Electron Configuration:1s2
2s2p6
3s2p6d10
4s2p6d10f14
5s2p6d5
6s2
Electrons per Energy Level: 2,8,18,32,13,2
Shell Model
Ionic Radius: 0.56Å
Filling Orbital: 5d5
Number of Electrons (with no charge): 75
Number of Neutrons (most common/stable nuclide): 111
Number of Protons: 75
Oxidation States: 6,4,2,-2
Valence Electrons: 5d5 6s2
Electron Dot Model
Chemical Properties of Rhenium
Electrochemical Equivalent: 0.9924g/amp-hr
Electron Work Function: 4.96eV
Electronegativity: 1.9 (Pauling); 1.46 (Allrod Rochow)
Heat of Fusion: 33.2kJ/mol
Incompatibilities:
Ionization PotentialFirst: 7.88
Valence Electron Potential (-eV): 180
Physical Properties of Rhenium
Atomic Mass Average: 186.207
Boiling Point: 5900K 5627°C 10161°F
Coefficient of lineal thermal expansion/K-1: 6.63E-6
ConductivityElectrical: 0.0542 106/cm  Thermal: 0.479 W/cmK
Density: 21.04g/cc @ 300K
Description:Rare and expensive silver white metal, which is usually obtained as a grey powder.
Elastic Modulus:Bulk: 334/GPaRigidity: 181/GPaYoungs: 466/GPa
Enthalpy of Atomization: 791 kJ/mole @ 25°C
Enthalpy of Fusion: 33.05 kJ/mole
Enthalpy of Vaporization: 707.1 kJ/mole
Flammablity Class:
Freezing Point: see melting point
Hardness ScaleBrinell: 1320 MN m-2Mohs: 7Vickers: 2450 MN m-2
Heat of Vaporization: 715kJ/mol
Melting Point: 3453K 3180°C 5756°F
Molar Volume: 9.07 cm3/mole
Physical State (at 20°C & 1atm): Solid
Specific Heat: 0.13J/gK
Vapor Pressure = 3.24Pa@3180°C
Regulatory / Health
CAS Number
7440-15-5
OSHA Permissible Exposure Limit (PEL)No limits set by OSHA
OSHA PEL Vacated 1989No limits set by OSHA
NIOSH Recommended Exposure Limit (REL)No limits set by NIOSH
Levels In Humans:Note: this data represents naturally occuring levels of elements in the typical 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
Discovery Year: 1925Name Origin:Greek, Rhenus for the Rhine River.
Abundance of Rhenium:Earth's Crust/p.p.m.: 0.0004
Seawater/p.p.m.: 0.000004
Atmosphere/p.p.m.: N/A
Sun (Relative to H=1E12): 2
Sources of Rhenium:Found in small amounts in gadolinite and molybdenite. It is usually extracted from the flue dusts of molybdenum smelters. Annual world production is around 4.5 tons.
Uses of Rhenium:It is added to tungsten and molybdenum alloys and is used in refractory metal components of missiles, electronic filaments, electrical contacts, high-temperature thermocouplers, oven filaments, electrodes, igniters for flash bulbs, jewelry, plating of metals by
electrolysis and vapor-phase deposition.
Additional Notes:Rhenium is a metallic element that has a very high tensile strength (80,000psi), high modulus of elasticity, is virtually insoluble in hydrochloric acid and does not oxidize or corrode in saltwater. In addition it has the widest range of valences of any element
and it retains its crystalline structure all the way to its melting point. Alloys of rhenium-molybdenum are superconductive at 10K.
[Last update: 2/22/2007]Notes below
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Rhenium Menu
Rhenium Page One
Overview of Rhenium
Rhenium's Name in Other Languages
Atomic Structure of Rhenium
Chemical Properties of Rhenium
Physical Properties of Rhenium
Regulatory / Health
Who/When/Where/How
Rhenium Page Two
Nuclides / Isotopes
Potential Parent Nuclides
Related Resources
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