1 Facts
1.1 Interesting Facts
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
- Niobium metal was used to get called Columbium in past.
- Niobium metal found freely in nature (abundance).
1.2 Sources
Found in Uranium Ores, Mining, Ores of metals
By-product of Tin Extraction, Found in Minerals, Mining, Ores of Minerals
1.3 History
1.3.1 Who Discovered
William Crookes
Charles Hatchett
1.3.2 Discovery
1.4 Abundance
1.4.1 Abundance In Universe
1.4.2 Abundance In Sun
~-9999 %~0.0000004 %
1E-08
0.1
1.4.3 Abundance In Meteorites
1.4.4 Abundance In Earth's Crust
1.4.5 Abundance In Oceans
1.4.6 Abundance In Humans