• Name: Dysprosium

  • Symbol: Dy

  • Number of Energy Levels: 6

  • Electrons on the outer energy level: 2

  • Atomic Number: 66

  • Atomic Mass: 162.5 Amu

  • Protons / Electrons: 66

  • Neutrons: 97

  • Density: 8.536 g/cm3

  • Classification: Rare Earth

Top 12 interesting facts about Dysprosium

  • Dysprosium was discovered in 1886 by Paul Emile Lecoq de Boisbaudran. Its name derives from the Greek word "dysprositos" which means "hard to get at".
  • Dysprosium's melting point is at 1412.0 C (1685.15 K, 2573.6 F) and its boiling point is at 2562.0 C (2835.15 K, 4643.6 F).
  • Dysprosium is a silvery rare-earth metal.
  • Dysprosium can be cut with a knife.
  • Dysprosium is never found freely in nature but in minerals (xenotime, fergusonite, gadolinite etc.)
  • Dysprosium reacts with air forming a layer of dysprosium oxide.
  • Dysprosium reacts slowly with cold water and quickly with hot water.
  • Dysprosium has seven stable isotopes; 164-dysprosium is the most abundant isotope of dysprosium.
  • Dysprosium is mainly produced in China.
  • Dysprosium has the highest magnetic strength (holmium has too), particularly at low temperatures.
  • Dysprosium is used in laser materials, commercial lightning, in nuclear reactors, in hard disks, in magnets, and other specialized uses.
  • Dysprosium powder when mixed with air can ignite.