• Name: Holmium

  • Symbol: Ho

  • Number of Energy Levels: 6

  • Electrons on the outer energy level: 2

  • Atomic Number: 67

  • Atomic Mass: 164.93031 Amu

  • Protons / Electrons: 67

  • Neutrons: 98

  • Density: 8.54 g/cm3

  • Classification: Rare Earth

Top 15 interesting facts about Holmium

  • Holmium was discovered in 1878 by Jaques-Louis Soret and Marc Delafontain. Its name derives from the Latin word "Holmia" which means "Stockholm".
  • Holmium's melting point is at 1470.0 C (1743.15 K, 2678.0 F) and its boiling point is at 2720.0 C (2993.15 K, 4928.0 F).
  • Holmium is malleable, soft, and silvery-white rare-earth metal.
  • Holmium is not found freely in nature due to its high reactivity.
  • Holmium is stable in air at room temperature but reacts with it when heated.
  • Holmium reacts with water.
  • Holmium is the 56th most abundant element in Earth's crust.
  • Holmium is produced from monazite mineral.
  • Holmium has the highest magnetic strength.
  • There is only one naturally occurring stable isotope of holmium, holmium-165.
  • The main producers of holmium are China and the USA.
  • Holmium is used to create artificial magnetic fields.
  • Other uses of holmium are: in microwave medical equipment, colorant in glass industry, for calibration in gamma ray spectrometers, and in nuclear reactors as a burnable poison.
  • Holmium element has no known biological role in human body but its salts stimulate metabolism.
  • Holmium is considered of a low level toxicity.