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87 Fr Francium

Alkali metal, mass: 223 u, no stable isotopes, abundance rank (earth/space): 93/?

Click image to magnify. Of course this is no francium, but it could look like that. The melting point of francium is approximately at room temperature, but the highly radioactive metal produces so much heat, even in the amount of some milligrams it would end up in glowing fume immediately. However, such a large amount hasn't been isolated yet.

Francium

Francium has the largest atomic diameter and is the most ignoble metal. Its chemical properties are similar to caesium, but it probably is even more reactive. However, it is very difficult to explore, because it is generated only in very small amounts from actinium decay. Its most stable isotope, 223Fr, has a half-life of only 22 minutes. This makes francium the most unstable element of the first 105. It has no applications beyond science. On Earth, francium is slightly more frequent than astatine, it decays to radium.


Creative Commons License The images are licensed under a Creative Commons Attribution 3.0 Unported License, unless otherwise noted. Attribution by linking to the according element page.


Page last changed on February 13. 2010

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