Template:Infobox rhenium

Rhenium,  ₇₅Re

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General properties
Pronunciation	Template:Infobox element/pronunciation
Appearance	silvery-grayish
Standard atomic weight (Ar, standard)	Template:Infobox element/standard atomic weight
Mass number	Template:Infobox element/symbol-to-most-stable-isotope (most stable isotope)
Rhenium in the periodic table
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Atomic number (Z)	75
Group	Template:Infobox element/group
Period	period 6
Block	d-block
Element category	Template:Infobox element/category format
Electron configuration	[Xe] 4f14 5d5 6s2
Electrons per shell	2, 8, 18, 32, 13, 2
Physical properties
Phase at STP	solid
Melting point	3459 K ​(3186 °C, ​5767 °F)
Boiling point	5903 K ​(5630 °C, ​10,170 °F)
Density (near r.t.)	21.02 g/cm3
when liquid (at m.p.)	18.9 g/cm3
Heat of fusion	60.43 kJ/mol
[[Enthalpy of vaporization|Heat of Template:Engvar]]	704 kJ/mol
Molar heat capacity	25.48 J/(mol·K)
[[Vapor pressure|Template:Engvar pressure]] Template:Infobox element/vapor pressure table
Atomic properties
Oxidation states	Template:Infobox element/symbol-to-oxidation-state
Electronegativity	Pauling scale: 1.9
[[Ionization energy|Template:Engvar energies]]	1st: 760 kJ/mol 2nd: 1260 kJ/mol 3rd: 2510 kJ/mol (more)
Atomic radius	empirical: 137 pm
Covalent radius	151±7 pm
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Other properties
Crystal structure	​Template:Infobox element/crystal structure Template:Infobox element/crystal structure
Speed of sound thin rod	4700 m/s (at 20 °C)
Thermal expansion	6.2 µm/(m·K)
Thermal conductivity	48.0 W/(m·K)
Electrical resistivity	193 nΩ·m (at 20 °C)
Magnetic ordering	paramagnetic
Magnetic susceptibility	+67.6·10−6 cm3/mol (293 K)
Young's modulus	463 GPa
Shear modulus	178 GPa
Bulk modulus	370 GPa
Poisson ratio	0.30
Mohs hardness	7.0
Vickers hardness	1350–7850 MPa
Brinell hardness	1320–2500 MPa
CAS Number	7440-15-5
History
Naming	after the river Rhine (German: Rhein)
Discovery	Masataka Ogawa (1908)
First isolation	Masataka Ogawa (1919)
Named by	Walter Noddack, Ida Noddack, Otto Berg (1925)
Main isotopes of rhenium
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