1 Facts
1.1 Interesting Facts
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
- Chromium is highly reactive, hence it is not found free in nature.
- Ores of Chromites mineral are the major source of Chromium metal.
- Almost 90% leather tanning is done with the help of chromium.
1.2 Sources
Formed by Decay Process, Mining
Found in Minerals, Mining, Ores of metals, Ores of Minerals
1.3 History
1.3.1 Who Discovered
Marguerite Perey
Louis Nicolas Vauquelin
1.3.2 Discovery
In 1939
In Between 1797 - 1798
1.4 Abundance
1.4.1 Abundance In Universe
NA1.5 * 10-3 %
5E-09
0.11
1.4.2 Abundance In Sun
~-9999 %~0.002 %
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