Radium (Ra)
"Behold Radium, the Radiant Healer with a Deadly Secret! It shines brightly, bringing light and hope, yet its invisible power holds a dangerous, lingering cost."
A memorable persona to anchor Ra in your mind.
5.5
Grams per cm³
696
Celsius (°C)
283
Radius (pm)
Daily Life Link
Remember those old-school glow-in-the-dark watch faces? Radium was the original secret sauce!
Discovery & History
Year Discovered
1898
Discovered By
Marie & Pierre Curie
Origin of Name
"The name is derived from the Latin ''radius'', meaning ray."
Technical Properties
Atomic Mass
[226] u
Standard State
solid
Boiling Point
1500°C
Electron Configuration
[Rn] 7s2
1st Ionization Energy
5.279 eV
Electron Affinity
N/A
Oxidation States
"A lustrous silvery-white metal that quickly tarnishes to black, all while subtly emitting its own eerie blue glow."
Did You Know?
Radium was discovered by the legendary Marie and Pierre Curie in 1898, after processing *tons* of pitchblende ore – an epic scientific detective story!
It's SO radioactive, it naturally glows with an eerie blue light, not because it's hot, but because its radiation excites the nitrogen in the air around it. Pure magic (but science!).
Radium was the very first element discovered purely by its radioactivity, fundamentally changing our understanding of matter and energy forever.
Talk about a wolf in sheep's clothing! Radium is an alkaline earth metal, putting it in the same chemical family as benign calcium and magnesium, but it’s millions of times more radioactive than uranium.