Facts About Francium and Mercury
Interesting Facts
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
  
- At room temperature mercury is found in a liquid state.
- A coin of pound or rupees floats in mercury.
- Because of its low melting point and boiling point it is used in thermometers.
  
Sources
Formed by Decay Process, Mining
  
Mining, Ores of Minerals
  
History
  
  
Who Discovered
Marguerite Perey
  
Ancient Chinese and Indians
  
Discovery
In 1939
  
Before 2000 BCE
  
Abundance
  
  
Abundance In Earth's Crust
Not Available