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Technical data for Rhenium

Click any property name to see plots of that property for all the elements.

Overview
NameRhenium
SymbolRe
Atomic Number75
Atomic Weight186.207
Density21.02 g/cm3
Melting Point3186 °C
Boiling Point5596 °C

Thermal properties
PhaseSolid
Melting Point3186 °C
Boiling Point5596 °C
Absolute Melting Point3459 K
Absolute Boiling Point5869 K
Critical PressureN/A
Critical TemperatureN/A
Heat of Fusion33 kJ/mol
Heat of Vaporization705 kJ/mol
Specific Heat137 J/(kg K)[note]
Adiabatic IndexN/A
Neel PointN/A
Thermal Conductivity48 W/(m K)
Thermal Expansion6.2×10-6 K-1

Bulk physical properties
Density21.02 g/cm3
Density (Liquid)18.9 g/cm3
Molar Volume8.85856×10-6
Brinell Hardness1320 MPa
Mohs Hardness7
Vickers Hardness2450 MPa
Bulk Modulus370 GPa
Shear Modulus178 GPa
Young Modulus463 GPa
Poisson Ratio0.3
Refractive IndexN/A
Speed of Sound4700 m/s
Thermal Conductivity48 W/(m K)
Thermal Expansion6.2×10-6 K-1

Reactivity
Valence7
Electronegativity1.9
ElectronAffinity14.5 kJ/mol
Ionization Energies
760, 1260, 2510, 3640 kJ/mol

Health and Safety
DOT Hazard ClassN/A
DOT NumbersN/A
RTECS Number
RTECSVI0780000
NFPA LabelN/A

Classifications
Alternate NamesNone
Names of AllotropesNone
Blockd
Group7
Period6
SeriesTransition Metal
Electron Configuration[Xe]6s24f145d5
ColorGray
Discovery
1925 in Germany
Gas phaseN/A
CAS NumberCAS7440-15-5
CID Number
CID23947
RTECS Number
RTECSVI0780000

Electrical properties
Electrical TypeConductor
Electrical Conductivity5.6×106 S/m
Resistivity1.8×10-7 m Ω
Superconducting Point1.7

Magnetic properties
Magnetic TypeParamagnetic
Curie PointN/A
Mass Magnetic Susceptibility4.56×10-9 m3/Kg
Molar Magnetic Susceptibility8.49×10-10 m3/mol
Volume Magnetic Susceptibility0.0000959

Abundances
% in Universe2×10-8%
% in Sun1×10-8%
% in Meteorites4.9×10-6%
% in Earth's Crust2.6×10-7%
% in Oceans1×10-10%
% in HumansN/A

Atomic dimensions and structure
Atomic Radius188 pm
Covalent Radius151 pm
Van der Waals RadiusN/A
Crystal StructureSimple Hexagonal
Lattice Angles
π/2, π/2, 2 π/3
Lattice Constants
276.1, 276.1, 445.6 pm
Space Group NameP63/mmc
Space Group Number194

Nuclear Properties
Half-LifeStable
LifetimeStable
Decay ModeN/A
Quantum Numbers6S5/2
Neutron Cross Section90
Neutron Mass Absorption0.016
Known Isotopes
160Re, 161Re, 162Re, 163Re, 164Re, 165Re, 166Re, 167Re, 168Re, 169Re, 170Re, 171Re, 172Re, 173Re, 174Re, 175Re, 176Re, 177Re, 178Re, 179Re, 180Re, 181Re, 182Re, 183Re, 184Re, 185Re, 186Re, 187Re, 188Re, 189Re, 190Re, 191Re, 192Re, 193Re, 194Re
Stable Isotopes
185Re
Isotopic Abundances
185Re37.4%
187Re62.6%


Notes on the properties of Rhenium:

Specific Heat: Value given for solid phase.

Up to date, curated data provided by Mathematica's ElementData function from Wolfram Research, Inc.

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