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Name: Indium
Symbol: In
Number of Energy Levels: 5
Electrons on the outer energy level: 3
Atomic number: 49
Atomic Mass: 114.818 Amu (Atomic Mass Units)
Protons/Electrons: 49
Neutrons: 66
Density: 7.31 g/cm3
Classification: Other Metals

Indium | Chemical elements

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).

Top 13 interesting facts about Indium

  1. Indium is a soft (it can be cut with a knife), malleable, silvery-white, and ductile metal.
  2. Indium does not react with water under normal conditions.
  3. Indium is very rare in Earth’s crust (the 68th most abundant element in Earth’s crust).
  4. Indium is very important for industry.
  5. Indium has a very low melting point which makes it an easily fusible metal.
  6. Indium is primarily produced from zinc ores.
  7. Indium is also used for coating of high-speed bearings.
  8. Indium’s main use is in liquid crystals displays and touch-screens.
  9. Indium’s naturally occurring isotopes are 113-In (stable) and 115-In.
  10. 38 other isotopes of indium are known.
  11. 115-In is radioactive and makes up more than 95% of all indium.
  12. Indium’s main producers are China, Canada, Japan, and South Korea.
  13. Indium is considered non-toxic metal.

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