• Name: Radium

  • Symbol: Ra

  • Number of Energy Levels: 7

  • Electrons on the outer energy level: 2

  • Atomic Number: 88

  • Atomic Mass: 226.0 Amu

  • Protons / Electrons: 88

  • Neutrons: 136

  • Density: 5.0 g/cm3

  • Classification: Alkali Earth

Top 12 interesting facts about Radium

  • Radium was discovered in 1898 by Pierre and Marie Curie. Its name derives from the Latin word "radius" which means "ray".
  • Radium's melting point is at 700.0 C (973.15 K, 1292.0 F) and its boiling point is at 1737.0 C (2010.15 K, 3158.6 F).
  • Radium is almost colorless.
  • Radium reacts with nitrogen forming a black surface layer.
  • Radium is a very volatile and reactive metal.
  • Radium's all 33 isotopes are radioactive and four of them occur naturally.
  • Radium can be found in small quantities in uranium and thorium ores and it is formed as a decay of uranium and thorium.
  • Radium's top 5 producers are Belgium, Canada, the Czech Republic, Slovakia, and the United Kingdom.
  • Radium is the only radioactive element and the heaviest of Alkali Earth group.
  • Radium is commercially used in nuclear medicine.
  • Radium's isotope 223-Ra is used in medicine for cancer treatment.
  • Radium is toxic, radioactive, and dangerous for humans, and has no biological role in living organisms.