Element Properties
By Name
By Atomic Number
By Density
Melting & Boiling Point
Electron Configuration
Radioactive Elements
Noble & Precious Metals
Periodic Table
Groups
Periodic Table
Alkali Metals
Alkaline Earth Metals
Halogens
Noble (Inert) Gases
Rare Earth Elements
Transition Metals
Metalloids (Semimetals)
Nonmetals
Poor Metals
Materials
Toxic Substances
Semiconductor Materials
Vitamins
Amino Acids
Inventions
& Patents
Reference
|
Rhenium
Chemical Properties & Compounds
| Symbol | Atomic Number | Atomic Weight | Melting Point | Boiling Point | Phase | Density | Classification |
| Re | 75 | 186.207 | 3186 °C | 5596 °C | Solid | 21.02 g/cm3 | Noble Metal |
|
|
|
| General |
| Name, Symbol, Number |
rhenium, Re, 75 |
| Chemical series |
transition metals |
| Group, Period, Block |
7, 6, d |
| Appearance |
grayish white
 |
| Standard atomic weight |
186.207(1) g·mol−1 |
| Electron configuration |
[Xe] 4f14 5d5 6s2 |
| Electrons per shell |
2, 8, 18, 32, 13, 2 |
| Physical properties |
| Phase |
solid |
| 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 |
| Heat capacity |
(25 °C) 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 |
| Crystal structure |
hexagonal |
| Oxidation states |
7, 6, 5, 4, 3, 2, 1, −1, −2, −3
(mildly acidic oxide) |
| Electronegativity |
1.9 (scale Pauling) |
Ionization energies
(more) |
1st: 760 kJ·mol−1 |
| 2nd: 1260 kJ·mol−1 |
| 3rd: 2510 kJ·mol−1 |
| Atomic radius |
135 pm |
| Atomic radius (calc.) |
188 pm |
| Covalent radius |
159 pm |
| Miscellaneous |
| Magnetic ordering |
? |
| Electrical resistivity |
(20 °C) 193 n Ω·m |
| Thermal conductivity |
(300 K) 48.0 W·m−1·K−1 |
| Thermal expansion |
(25 °C) 6.2 µm·m−1·K−1 |
| Speed of sound (thin rod) |
(20 °C) 4700 m/s |
| 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 |
| Selected isotopes |
|
|
| References |
|
Rhenium Compounds
|
Source: Wikipedia article Rhenium
|
|
Chemistry Quick Facts
