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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.
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