75
Re
186.21
Rhenium (Re)
Element 75 · Period 6 · Group 7
transition-metal
solid at room temp
d-block
About Rhenium
Second highest melting point. Used in jet engine superalloys and catalysts.
Physical Properties
Atomic Mass
186.21 u
State at 25°C
Solid
Melting Point
3186 °C
Boiling Point
5596 °C
Density
21.02 g/cm³
Magnetism
Paramagnetic
Atomic Properties
Electron Configuration
[Xe] 4f¹⁴ 5d⁵ 6s²
Electron Shells
2, 8, 18, 32, 13, 2
Electronegativity
1.9
Atomic Radius
188 pm
Ionization Energy
760 kJ/mol
Oxidation States
+1 to +7
Discovery & History
Discovered By
Masataka Ogawa
Discovery Year
1925
Named By
Walter Noddack
Name origin: Latin: Rhenus (Rhine)
Frequently Asked Questions
- Is Rhenium a metal, nonmetal, or metalloid?
- Rhenium is classified as a transition-metal.
- What state is Rhenium in at room temperature?
- Rhenium is a solid at standard room temperature (25°C).
- What is the atomic mass of Rhenium?
- Rhenium has an atomic mass of 186.21 atomic mass units (u).
- Who discovered Rhenium?
- Rhenium was discovered by Masataka Ogawa in 1925.
- Where is Rhenium on the periodic table?
- Rhenium is element number 75, located in period 6 and group 7.