What is Radium?

Radium, the eighty-eighth element on the periodic table, is a radioactive alkaline earth metal known for its historical glow and modern cautionary tale.

Atomic Number: 88

Symbol: Ra

Atomic Mass: [226] u (most stable isotope)

Category: Alkaline Earth Metal

State at Room Temperature: Solid

Discovered By: Pierre and Marie Curie (1898)

⚛️ Atomic Structure of Radium

Radium has eighty-eight protons, one hundred thirty-eight neutrons (in its most stable isotope, Radium-226), and eighty-eight electrons, with two in its outer shell.

  • 🟢 Protons: 88
  • 🔴 Neutrons: 138 (Most stable isotope, Radium-226)
  • 🟡 Electrons: 88

💡 Did you know? Radium was once used in glow-in-the-dark paint for watches and dials!

🔬 Radium Properties

Radium is radioactive, silvery-white, and reactive with water. It emits alpha, beta, and gamma radiation and glows faintly in the dark.

🧪 How Was Radium Discovered?

In 1898, Pierre and Marie Curie isolated Radium from uranium ore (pitchblende), naming it for its radiant properties.

⚡ Uses of Radium

  • 🩺 Medicine: Historical cancer treatments.
  • ⌚ Glow: Luminous paint (now discontinued).
  • 🔬 Research: Radiation studies.

💡 Fun Facts About Radium

  • 🌟 Naturally glows.
  • ⚖️ Denser than lead.
  • ⏳ Half-life of 1,600 years.
  • 🏭 Found in uranium ores.

⚠️ Safety & Precautions

Radium is highly radioactive and a health hazard. Avoid exposure; it's linked to bone cancer from historical misuse.

🔬 Explore More Elements