• Name: Rhenium

  • Symbol: Re

  • Number of Energy Levels: 6

  • Electrons on the outer energy level: 2

  • Atomic Number: 75

  • Atomic Mass: 186.207 Amu

  • Protons / Electrons: 75

  • Neutrons: 111

  • Density: 21.02 g/cm3

  • Classification: Transition Metal

Top 21 interesting facts about Rhenium

  • Rhenium was discovered in 1925 by Walter Noddack. Its name derives from the word "Rhines" which is a river in Germany.
  • Rhenium's melting point is at 3180.0 C (3453.15 K, 5756.0 F) and its boiling point is at 5627.0 C (5900.15 K, 10160.6 F).
  • Rhenium is a silvery-white, heavy transition metal.
  • Rhenium is one of the rarest elements in the Earth's crust.
  • Rhenium has the third highest melting point and the highest boiling point.
  • Rhenium is the forth densest element.
  • Rhenium has similar chemical properties with manganese and technetium.
  • Rhenium is obtained as a byproduct of molybdenum and copper.
  • Rhenium improves tungsten's properties.
  • Rhenium is the last stable element that was discovered.
  • Rhenium is a very expensive metal due to its low availability.
  • Rhenium has a very high military importance.
  • Rhenium has only one stable isotope rhenium-185.
  • Rhenium was never found freely in nature.
  • Rhenium is extracted from the mineral molybdenite.
  • Chile is the main producer of rhenium followed by the USA, Peru, and Poland.
  • Rhenium is used in jet engine parts in military industry (70% of total production).
  • Rhenium is used in superalloys to improve creep strength (superalloys are used in jet engines and industrial gas turbines engines).
  • Rhenium (rhenium-platinum alloy) is also used as a catalyst.
  • Rhenium-188 and rhenium-186 are used in medicine for liver cancer treatment.
  • Rhenium is not known to be toxic or hazardous due to its use in small amounts.