• Name: Helium

  • Symbol: He

  • Number of Energy Levels: 1

  • Electrons on the outer energy level: 2

  • Atomic Number: 2

  • Atomic Mass: 4.002602 Amu

  • Protons / Electrons: 2

  • Neutrons: 2

  • Density: 0.1785 g/cm3

  • Classification: Noble-Gas

Top 13 interesting facts about Helium

  • Helium = Helios (which means sun in Greek)
  • Helium was discovered in 1895 by Sir William Ramsay (officially); it was earlier observed by Pierre Jensen in 1868.
  • Helium has the lowest melting and boiling point among all elements in the Mendeleev Periodic Table (melting point is at -272.0 centigrade and boiling point is at -268.6 centigrade).
  • Helium is the second lightest element after Hydrogen.
  • Although Helium is not a common element on the Earth, it is the second abundant element in the Universe.
  • About a quarter of the Universe mass is make up of Helium atoms.
  • Helium is mostly obtained from natural gas and it is colorless, tasteless, odorless and inert (Helium has little or no ability to react).
  • Helium is also a non-toxic element.
  • Helium is safer than Hydrogen to be use in airships and air-balloons because it is inflammable.
  • Helium is commonly know for it’s capacity of changing the voice’s sound of the person who inhales it and for party balloons that are filled with it.
  • Helium helps reducing the effects of narcosis in diving when it is mixed with Oxygen.
  • Helium is used as a cooling agent in cryogenics.
  • Helium is also used for treating asthma.