Renyo

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Rhenium
75Re
Tc

Re

Bh
tungstenrheniumosmium
Panagway
silvery-white
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan rhenium, Re, 75
Paglitok /ˈrniəm/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-nee-əm]]
Kategoriyang elemento puthaw nga transisyon
Group, period, block 76, d
Gibug-aton sa atomo 186.207
Kontorno sa elektron [Xe] 4f14 5d5 6s2
2, 8, 18, 32, 13, 2
Electron shells of rhenium (2, 8, 18, 32, 13, 2)
History
Pagkadiskobre Masataka Ogawa (1908)
First isolation Masataka Ogawa (1908)
Named by Walter Noddack, Ida Noddack, Otto Berg (1922)
Physical properties
Phase magahi
Density (near r.t.) 21.02 g·cm−3
Liquid density at m.p. 18.9 g·cm−3
Melting point 3459 K, 3186 °C, 5767 °F
Boiling point 5869 K, 5596 °C, 10105 °F
Heat of fusion 60.43 kJ·mol−1
Heat of vaporization 704 kJ·mol−1
Molar heat capacity 25.48 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 3303 3614 4009 4500 5127 5954
Atomic properties
Oxidation states 7, 6, 5, 4, 3, 2, 1, 0, -1
(mildly acidic oxide)
Electronegativity 1.9 (Pauling scale)
Ionization energies
(more)
1st: 760 kJ·mol−1
2nd: 1260 kJ·mol−1
3rd: 2510 kJ·mol−1
Atomic radius 137 pm
Covalent radius 151±7 pm
Miscellanea
Crystal structure hexagonal
Rhenium has a hexagonal crystal structure
Magnetic ordering paramagnetic[1]
Electrical resistivity (20 °C) 193 nΩ·m
Thermal conductivity 48.0 W·m−1·K−1
Thermal expansion 6.2 µm/(m·K)
Speed of sound (thin rod) (20 °C) 4700 m·s−1
Young's modulus 463 GPa
Shear modulus 178 GPa
Bulk modulus 370 GPa
Poisson ratio 0.30
Mohs hardness 7.0
Vickers hardness 2450 MPa
Brinell hardness 1320 MPa
CAS registry number 7440-15-5
Most stable isotopes
Main article: Isotopes of rhenium
iso NA half-life DM DE (MeV) DP
185Re 37.4% 185Re is stable with 110 neutrons
187Re 62.6% 4.12×1010 y α 1.653 183Ta
β 0.0026 187Os
· r

Ang renyo (Iningles rhenium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Re ug kaiphan nga atomik 75. Ang renyo mao ang puthaw nga transisyon.

Ang mga gi basihan niini[usba | usba ang wikitext]

  1. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.


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