Facts About Actinium and Hafnium
Facts
Interesting Facts
Not Available
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
Sources
Obtained by Treating Radium with Neutrons, Ores of metals
By-product Zirconium Refining
History
Who Discovered
Friedrich Oskar Giesel
Dirk Coster and George de Hevesy
Discovery
In 1902
In 1922
Abundance
Abundance In Universe
Not Available
7 * 10-8 %
25
Abundance In Sun
~-9999 %
~0.0000001 %
26
Abundance In Meteorites
Not Available
0.00 %
37
Abundance In Earth's Crust
Not Available
0.00 %
31
Abundance In Oceans
Not Available
0.00 %
27
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