• Name: Indium

  • Symbol: In

  • Number of Energy Levels: 5

  • Electrons on the outer energy level: 3

  • Atomic Number: 49

  • Atomic Mass: 114.818 Amu

  • Protons / Electrons: 49

  • Neutrons: 66

  • Density: 7.31 g/cm3

  • Classification: Transition Metal

Top 15 interesting facts about Indium

  • Indium was discovered in 1863 by Ferdinand Reich. Indium's name derives from the indigo color seen in its spectrum.
  • Indium's melting point is at 156.61 C (429.76 K, 313.898 F) and its boiling point is at 2000.0 C (2273.15 K, 3632.0 F).
  • Indium is a soft (it can be cut with a knife), malleable, silvery-white, and ductile metal.
  • Indium does not react with water under normal conditions.
  • Indium is very rare in Earth's crust (the 68th most abundant element in Earth's crust).
  • Indium is very important for industry.
  • Indium has a very low melting point which makes it an easily fusible metal.
  • Indium is primarily produced from zinc ores.
  • Indium is also used for coating of high-speed bearings.
  • Indium's main use is in liquid crystals displays and touch-screens.
  • Indium's naturally occurring isotopes are 113-In (stable) and 115-In.
  • 38 other isotopes of indium are known.
  • 115-In is radioactive and makes up more than 95% of all indium.
  • Indium's main producers are China, Canada, Japan, and South Korea.
  • Indium is considered non-toxic metal.