Facts About Yttrium and Hafnium
Interesting Facts
- Yttrium Metal is highly toxic.
- Yttrium Metal is highly reactive in nature hence not found free in nature.
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
Sources
Found in Minerals, Mining, Ores of Minerals
By-product Zirconium Refining
Who Discovered
Johan Gadolin
Dirk Coster and George de Hevesy
Discovery
In 1794
In 1922
Abundance In Earth's Crust