Facts About Hafnium and Thulium
Interesting Facts
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
- Thulium metal can resist corrosion due to dry air .
- Only Tm-169 isotope of Thulium metal occur naturally.
Sources
By-product Zirconium Refining
Found in Minerals, Mining, Ores of Minerals
Who Discovered
Dirk Coster and George de Hevesy
Per Teodor Cleve
Discovery
In 1922
In 1879
Abundance In Earth's Crust