Rhenium (Re) — Element 75: Properties & Data | Aladdin Scientific
Rhenium(Re) — Element 75
Rhenium (Re) is a transition metal with atomic number 75 and atomic mass 186.207. It has melting point 3459 K (3186 °C), boiling point 5869 K (5596 °C), density 20.8 g/cm³. It sits in group 7 and period 6 of the periodic table and was discovered in 1925.
Key facts
| Atomic mass | 186.2070 u |
|---|---|
| Electron configuration | [Xe]6s2 4f14 5d5 |
| Oxidation states | +7, +6, +4 |
| Electronegativity (Pauling) | 1.9 |
| Atomic radius (van der Waals) | 217 pm |
| Ionization energy | 7.88 eV |
| Electron affinity | 0.15 eV |
| Melting point | 3459 K |
| Boiling point | 5869 K |
| Density | 20.8 g/cm³ |
| Standard state | Solid |
| Year discovered | 1925 |
Frequently asked questions
What is the electron configuration of rhenium?
The ground-state electron configuration of rhenium is [Xe]6s2 4f14 5d5.
What group and period is rhenium in?
Rhenium (Re) is in group 7 and period 6 of the periodic table, classified as a transition metal.
What is the melting point of rhenium?
Rhenium melts at 3459 K (3186 °C).
What is the standard state of rhenium?
Rhenium is a solid at standard temperature and pressure.
Related elements
About this data: property values compiled from IUPAC Standard Atomic Weights (2021), the NIST Atomic Spectra Database, and PubChem. Curated by the Aladdin Scientific technical team. Last reviewed: .