Facts About Praseodymium and Francium
Facts
Interesting Facts
- Praseodymium metal is synthetically produced metal.
- Praseodymium is used as possible fuel for radioactive generators.
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
Sources
Found in Minerals, Mining, Ores of Minerals
Formed by Decay Process, Mining
History
Who Discovered
Not Available
Marguerite Perey
Discovery
In 1885
In 1939
Abundance
Abundance In Universe
2 * 10-7 %
22
Not Available
Abundance In Sun
~0.0000001 %
26
~-9999 %
Abundance In Meteorites
0.00 %
40
Not Available
Abundance In Earth's Crust
0.00 %
27
Not Available
Abundance In Oceans
0.00 %
39
Not Available
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