Interesting Facts
Sources
Who Discovered
Discovery
Abundance In Universe
Abundance In Sun
Abundance In Meteorites
Abundance In Earth's Crust
Abundance In Oceans
Abundance In Humans
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
Found in Uranium Ores, Mining, Ores of metals
- Niobium metal was used to get called Columbium in past.
- Niobium metal found freely in nature (abundance).
By-product of Tin Extraction, Found in Minerals, Mining, Ores of Minerals