| Rhenium | |
| Electrons per shell | 2,8,18,32,13,2 |
| Electron Configuration | [Xe] 4f14 5d5 6s2 ![]() |
| Ground state | 6S5/2 |
| Atomic Volume | 8.85 cm3 mol-1 |
| Electronegativity | 1.9 |
| Magnetic ordering | No data |
| Mass magnetic susceptibility | 4.6 x 10-9 |
| Molar magnetic susceptibility | 8.57 x 10-10 |
| Speed of sound | 4700 m s-1 |
Thermal Properties |
|
| Enthalpy of Atomization | 791 kJ mol-1 @25°C |
| Enthalpy of Fusion | 33.1 kJ mol-1 |
| Enthalpy of Vaporisation | 704.25 kJ mol-1 |
| Heat Capacity | 25.48 J mol-1 K-1 |
| Thermal Conductivity | 48.0 W m-1 K-1 |
| Thermal Expansion | 6.2 μm m-1 K-1 |
| Critcal Temperature | No data. |
| Critcal Pressure | No data. |
| Adiabatic index | No data. |
Hardness |
|
| Brinell hardness | 1320 MPa |
| Mohs hardness | 7.0 |
| Vickers hardness | 2450 MPa |
Elastic Properties |
|
| Bulk modulus | 370 GPa |
| Poisson ratio | 0.30 |
| Shear modulus | 178 GPa |
| Young's modulus | 463 GPa |
Electrical Properties |
|
| Electrical resistivity | 1.8 x 10-7 Ω m |
| Electrical conductivity | 0.0542 106/cm Ω |
Chemical Properties |
|
| Electrochemical Equivalent | 0.9924 g Ah-1 |
| Electron Work Function | 4.96 eV |
| Valence Electron Potential (-eV) | 180 |
| Ionization Potential | |
| 7.88 | |
Energy Levels |
|
| 61.1403 KeV | |
| 59.7179 KeV | |
| 69.31 KeV | |
| 70.1682 KeV | |
| 69.2571 KeV | |
| 8.6525 KeV | |
| 8.5862 KeV | |
| 10.01 KeV | |
| 10.2752 KeV | |
| 10.1581 KeV | |
| 9.8455 KeV | |
| 11.6854 KeV | |
| 12.0078 KeV | |
| 9.024 KeV | |
| 7.6013 KeV | |
Atomic Radii |
|
| 135 pm | |
| 188 pm | |
| 159 pm | |
| No data. | |
| 110 pm | |
| 137 pm | |
Ionic Radii (Å) |
||||
| Charge | Coordination | Crystal | Ionic | Key |
| 4 | Vi | 0.77 | 0.63 | RM |
| 5 | VI | 0.72 | 0.58 | E |
| 6 | VI | 0.69 | 0.55 | E |
| 7 | IV | 0.52 | 0.38 | |
| VI | 0.67 | 0.53 | ||
| R, From r3 vs V plots. |
| C, Calculated from bond length - bond strength equations. |
| E, Estimated. |
| *, Most Reliable. |
| M, From Metallic Oxides. |
| A, Ahrens (1952) Ionic radius. |
| P, Pauling's (1960) Crystal Radius. |
Oxidation States |
|
| Re+3, Re+4, Re+5 | |
| Re-3, Re-1, Re0, Re+1, Re+2, Re+6, Re+7 | |
Ionisation Energies (kJ mol-1) ![]() |
|
| 760 | |
| 1260 | |
| 2510 | |
| 3640 | |
| 4900 | |
| 6300 | |
| 7600 | |
Vapour Pressure |
||||||
| P (Pa) | 1 | 10 | 100 | 1K | 10K | 100K |
| T (K) | 3303 | 3614 | 4009 | 4500 | 5127 | 5954 |
Crystal Structure |
|
| Hexagonal close packed | |
![]() |
a = 276.1 pm |
| b = 276.1 pm | |
| c = 445.6 pm | |
| α = 90° | |
| β = 90° | |
| γ = 120° | |