Facts About Francium and Hafnium
Interesting Facts
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
Sources
Formed by Decay Process, Mining
By-product Zirconium Refining
Who Discovered
Marguerite Perey
Dirk Coster and George de Hevesy
Discovery
In 1939
In 1922
Abundance In Universe
Not Available
Abundance In Sun
~-9999 %
Abundance In Meteorites
Not Available
Abundance In Earth's Crust
Not Available
Abundance In Oceans
Not Available