Facts About Niobium and Hafnium
Interesting Facts
- Niobium metal was used to get called Columbium in past.
- Niobium metal found freely in nature (abundance).
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
Sources
By-product of Tin Extraction, Found in Minerals, Mining, Ores of Minerals
By-product Zirconium Refining
Who Discovered
Charles Hatchett
Dirk Coster and George de Hevesy
Discovery
In 1801
In 1922
Abundance In Earth's Crust