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.