Rhenium
Transition Metal
Rhenium (Re) is a chemical element with atomic number 75, classified as a transition metal. At room temperature it is a solid. It was discovered in 1925 by Walter Noddack, Ida Tacke, Otto Berg.
Properties
- Atomic number
- 75
- Atomic mass
- 186.21 u
- Category
- Transition Metal
- Group
- 7
- Period
- 6
- Block
- d-block
- Electron configuration
- [Xe] 4f¹⁴ 5d⁵ 6s²
- Phase at STP
- Solid
- Density
- 21.02 g/cm³
- Melting point
- 3459 K (3185.8 °C)
- Boiling point
- 5869 K (5595.9 °C)
- Electronegativity
- 1.9
- Atomic radius
- 188 pm
- Ionization energy
- 7.834 eV
- Discovery
- 1925 · Walter Noddack, Ida Tacke, Otto Berg
Common uses
Jet engines, catalysts, thermocouples, mass spectrometers
Did you know?
One of the rarest elements and essential for jet engine efficiency.
Experiment with the elements
Rhenium doesn't form any compounds in our lab yet, but the periodic table sandbox lets you combine dozens of other real elements into real compounds — water, table salt, ammonia and many more — with their true chemical formulas.