1 Facts
1.1 Interesting Facts
- Strontium element is softer than Calcium.
- Silvery Strontium turns yellow, if exposed to air.
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
1.2 Sources
Found in Minerals, Mining, Ores of Minerals
Found in Uranium Ores, Mining, Ores of metals
1.3 History
1.3.1 Who Discovered
William Cruickshank
William Crookes
1.3.2 Discovery
1.4 Abundance
1.4.1 Abundance In Universe
1.4.2 Abundance In Sun
~0.000005 %~-9999 %
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