• Name: Chromium

  • Symbol: Cr

  • Number of Energy Levels: 4

  • Electrons on the outer energy level: 1

  • Atomic Number: 24

  • Atomic Mass: 51.9961 Amu

  • Protons / Electrons: 24

  • Neutrons: 28

  • Density: 7.91 g/cm3

  • Classification: Transition Metal

Top 14 interesting facts about Chromium

  • Chromium was discovered in 1797 by Louis Vauquelin. Chromium's name derives from the Greek word "chroma" which means "color".
  • Chromium's melting Point is at 1857.0 C (2130.15 K, 3374.6 F) and boiling point at 2672.0 C (2945.15 K, 4841.6 F).
  • Chromium is a steely-gray metal.
  • Chromium is the only solid metal which is antiferromagnetic.
  • Most of chromium compounds are very colored which explains its origin name.
  • Most of the world's chromium is extracted from iron chromium oxide (FeCr2O4).
  • Chromium has a very high resistance and hardness.
  • Steel is made highly resistant to corrosion and discoloration with the help of chromium.
  • Electroplating with chromium is another important application in which chromium plays a major role.
  • Every year approximately 3.3 tones of ferro-chrome are produced.
  • The largest producers of chromium ore are South Africa, India, Kazakhstan, and Zimbabwe.
  • In the air, chromium forms a very thin but dense layer of oxide (just few atoms thick) which prevents it from further oxidation.
  • Chromium is the 22nd most abundant element in the Earth's crust.
  • Chromium has three stable isotopes 52-Cr (the most abundant), 53-Cr, and 54-Cr.