Francium

Made by Brennan Archer Changes by Arrigo Almeida Zacory Shakespear
 * Chemical element: ** Francium, also know as eka-caesium and actinium

**Symbol**: Fr

**Atomic numbe**r: 81

**Boiling point**: 1251Fº

**Melting point**: 81Fº


 * Discovery ** : Francium was discovered by Marguerite Perey.

**Characteristics**: Francium is an alkali metal. As an alkali metal it has one valence, or outer, electron. It is highly radioactive and decays into astatine, radium, and radon. A bulk francium has never been found. The francium was the last to be discovered in nature. Francium is extremely rare because after it is formed it decays right away, and the other isotopes are entirely synthetic, and the largest amount of francium made in labs was a cluster of more than 300,000 atoms.

**Way of Extraction**: Francium is extracted from uranium, but due to its short half-life it only stays on the solidified form for a really short period of time, max of 22 minutes, after this time the francium changes to a radioactive gas form. **Francium in nature:** Francium-223 is the result of the alpha decay of actinium-227, and it can only be found in trace amounts of uranium and thorium minerals. In a certain amount of uranium is estimated to be one francium atom for every 1 × 1018 uranium atoms.


 * Synthesized Francium : ** Francium can be synthesized in the nuclear reaction: 197Au + 18O → 210Fr + 5 n


 * Standard atomic weight: ** 223


 * Electron configuration: ** 2, 8, 18, 32, 18, 8, 1



Sources: http://en.wikipedia.org/wiki/Francium http://wiki.answers.com/Q/How_do_you_extract_francium