Facts About Hafnium and Holmium
Facts
Interesting Facts
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
- Holmium metal is very soft and malleable.
- Holmium metal is well known for its corrosion resistivity.
Sources
By-product Zirconium Refining
Found in Minerals, Mining, Ores of Minerals
History
Who Discovered
Dirk Coster and George de Hevesy
Marc Delafontaine
Discovery
In 1922
In 1878
Abundance
Abundance In Universe
7 * 10-8 %
25
5 * 10-8 %
27
Abundance In Sun
~0.0000001 %
26
~-9999 %
Abundance In Meteorites
0.00 %
37
0.00 %
99+
Abundance In Earth's Crust
0.00 %
31
0.00 %
38
Abundance In Oceans
0.00 %
27
0.00 %
99+
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