Symbol Re
Atomic Number 75
Atomic Mass 186.21 g.mol -1
Discovered by Walter Noddack, Ida Tacke and Otto Berg in 1925

Chemical Properties of Rhenium

Group 7 Melting point 3185°C, 5765°F, 3458 K
Period 6 Boiling point 5590°C, 10094°F, 5863 K
Block d Density (g cm−3) 20.8
Atomic number 75 Relative atomic mass 186.21
State at 20°C Solid Key isotopes 187Re
Electron configuration [Xe]4f14 5d6s2

What is Rhenium?

  • The two most important uses of rhenium have been in high-temperature superalloys turbine blades for aircraft engines and platinum-rhenium catalysts.
  • It is a heavy, silvery-white and third-row transition metal in group 7 of the periodic table.
  • The element can be traced on the earth’s surface in parts per billion.
  • The element has no mineral characteristic and it has been detected in certain ores of platinum and molybdenite.

Uses of Rhenium

  • The element is mainly used as a petroleum reforming catalyst and also in the turbine engine of high-temperature components as superalloys.
  • The element amplifies the high-temperature strength properties of some nickel-based superalloys.
  • Rhenium is added to molybdenum and tungsten to form alloys that are used for making filaments for lamps and ovens.
  • Rhenium is added to high-temperature superalloys which are used to make jet engine parts.

Properties of Rhenium

  • The element has a very high melting point next to Tungsten.
  • The element is formed using oxidising smelter residues gained by molybdenite processing.
  • The atmospheric heat would be more than sufficient to form the metallic version of this element.

Facts about Rhenium

  • The element is an important part of photoflash in photography.
  • It is used in the hydrogenation of fine chemicals and also as an additive to molybdenum and tungsten-based alloys.
Test your knowledge on Rhenium


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