Interesting Facts
Sources
Who Discovered
Discovery
Abundance In Universe
Abundance In Sun
Abundance In Meteorites
Abundance In Earth's Crust
Abundance In Oceans
Abundance In Humans
- Curium metal does not occur free in nature.
- Curium metal is a synthetically produced metal.
Bombarding Plutonium with Helium Ions
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
By-product Zirconium Refining
Dirk Coster and George de Hevesy