Rhenium (Re)
Rhenium (Re, element 75) is a transition metal in group 7, period 6. Atomic mass 186.207, electron configuration [Xe] 4f¹⁴ 5d⁵ 6s², uses and facts.
About Rhenium
Rhenium is a transition metal with the symbol Re and atomic number 75. It is a solid at room temperature, and it sits in group 7, period 6 of the periodic table. Rhenium was discovered in 1925 by Walter Noddack, Ida Tacke, Otto Berg.
Rhenium key facts
- Atomic number: 75
- Symbol: Re
- Atomic mass: 186.207 u
- Category: transition metal
- Group: 7
- Period: 6
- State at room temperature: solid
- Electron configuration: [Xe] 4f¹⁴ 5d⁵ 6s²
- Electronegativity (Pauling): 1.9
- Melting point: 3459 K (3185.85 °C)
- Boiling point: 5869 K (5595.85 °C)
- Density: 21.02 g/cm³
- Common oxidation states: −3, −1, 0, +1, +2, +3, +4, +5, +6, +7
Electron configuration
The electron configuration of rhenium is [Xe] 4f¹⁴ 5d⁵ 6s². The part in brackets is the noble gas core; the rest shows how the outer electrons fill their subshells.
Uses of rhenium
- Jet engines
- Catalysts
- Thermocouples
Did you know?
Rhenium was one of the last stable elements to be discovered. Jet engine turbine blades are made of rhenium alloys.
Other elements in group 7 and neighbours
Frequently asked questions
What is the atomic number of rhenium?
The atomic number of rhenium is 75, which means every rhenium atom has 75 protons.
What is the electron configuration of rhenium?
The electron configuration of rhenium is [Xe] 4f¹⁴ 5d⁵ 6s².
What group and period is rhenium in?
Rhenium is a transition metal in group 7, period 6.
What state is rhenium at room temperature?
Rhenium is a solid at room temperature.
What is rhenium used for?
Rhenium is used for jet engines, catalysts, thermocouples.