
Rhenium (Re) is a chemical element of the periodic table, located in the group 7 and the period 6, and has the atomic number 75. It is a rare, lustrous, silvery-white transition metal, whose name comes from the Latin word “Rhenus”, which means the Rhine. It has the highest melting point and boiling point of all metals.
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– d block |
FAQs on Rhenium Element
Rhenium |
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‣ What does rhenium look like? Appearance: silvery-greyish |
‣ Who discovered rhenium? When was the element rhenium discovered? Discovery: Walter Noddack, Ida Noddack, Otto Berg (1925) First isolation: Walter Noddack, Ida Noddack (1928) |
‣ Where is rhenium on the periodic table?![]() Location: Rhenium is found in the seventh column of the periodic table, next to the tungsten element. |
‣ What is rhenium’s atomic number? Atomic number (Z): 75 |
‣ What’s the symbol for rhenium? Symbol: Re |
‣ Rhenium atomic weight: 186.207 |
‣ What block does rhenium belong to? Block: d-block |
‣ Rhenium is in what group on the periodic table? Group: 7 |
‣ What period is rhenium on the periodic table? Period: 6 |
‣ What is the atomic radius of rhenium? Atomic radius: empirical: 137 pm |
‣ Rhenium covalent radius: 151±7 pm |
‣ What is the melting point of rhenium? Melting point: 3459 K (3186 °C, 5767 °F) |
‣ What is the boiling point of rhenium? Boiling point: 5903 K (5630 °C, 10,170 °F) |
‣ How many shells does rhenium have? Electrons per shell: 2, 8, 18, 32, 13, 2 |
‣ What is the electron configuration of rhenium? Electron configuration: [Xe] 4f14 5d5 6s2 |
‣ Rhenium ionization energies: 1st: 760 kJ/mol 2nd: 1260 kJ/mol 3rd: 2510 kJ/mol |
‣ What is the phase of rhenium? Phase (at r.t): solid |
‣ Rhenium density (near r.t): 21.02 g/cm3 when liquid (at m.p): 18.9 g/cm3 |
‣ Rhenium magnetic ordering: paramagnetic |
‣ Rhenium natural occurrence: primordial |
‣ What is the oxidation state of rhenium? Oxidation state: +1, +2, +3, +4, +5, +6, +7 |
‣ What’s the electronegativity of rhenium? Electronegativity: Pauling scale: 1.9 |
‣ Rhenium poisson’s ratio: 0.30 |
‣ Rhenium heat of fusion: 60.43 kJ/mol |
‣ Rhenium heat of vaporization: 704 kJ/mol |
‣ Rhenium molar heat capacity: 25.48 J/(mol K) |
‣ Rhenium molar magnetic susceptibility: +67.6 × 10-6 cm3/mol (293 K) |
‣ Speed of sound in rhenium: 4700 m/s (at 20 °C) |
‣ What is the crystal structure of rhenium? Crystal structure: hexagonal close-packed (hcp) |
‣ Thermal expansion of rhenium: 6.2 µm/(m.K) |
‣ Thermal conductivity of rhenium: 48.0 W/(m.K) |
‣ Rhenium electrical resistivity: 193 nΩ.m (at 20 °C) |
‣ Rhenium hardness Mohs hardness: 7.0 Vickers hardness: 1350-7850 MPa Brinell hardness: 1320-2500 MPa |
‣ Young’s modulus of rhenium: 463 GPa |
‣ Shear modulus of rhenium: 178 GPa |
‣ Bulk modulus of rhenium: 370 GPa |
‣ Rhenium CAS number: 7440-15-5 |
‣ Rhenium vapor pressure
Vapor pressure | ||||||
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P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
at T (K) | 3303 | 3614 | 4009 | 4500 | 5127 | 5954 |
‣ How many isotopes does rhenium have?
Main isotopes of rhenium | ||||
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Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
185Re | 37.4 % | stable | ||
187Re | 62.6 % | 4.12 × 1010 y | β– | 187Os |
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