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.
Quick facts Rhenium, Panagway ...
| Rhenium |
|---|
75Re |
|
|
| Panagway |
silvery-white
 |
| Kinatibuk-ang mga kinaiya |
| Ngalan, simbolo, kaiphan |
rhenium, Re, 75 |
| Paglitok |
[[Help:Pronunciation respelling key|Plantilya:Smallcaps all-nee-əm]] |
| Kategoriyang elemento |
puthaw nga transisyon |
| Group, period, block |
7, 6, 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
|
| 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 |
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