Francium

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Francium
Atomic Number - 87 Symbol - Fr Atomic Weight - 223
By Cameron Janney
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Properties and Uses of Francium

• Properties
• Melting point is 27 degree celsius
• Boiling point is 677 degree celcius
• Heaviest of alkali metals
• Most unstable of the first 101 elements
• Closely resembles chemical property of cesium

• Uses
• According to science, Francium only exists in
  short-lived radioactive forms. From the
  properties of the known isotopes, it states that
  no long-lived form of Francium will ever be found
  in nature. The most "durable" has a half-life of
  21 minutes (if you had 1 gram of it, you'd only
  have 0.5 gram 21 minutes later). Based on this
  information, Francium is not being used in
  industry.

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History and Location of Francium

• Discovered in 1939 by Marguerite Perey of the
  Curie Institute, Paris, France. Francium was
  named after the country in which it was
  discovered.
• The symbol of Francium (Fr) came from the country
  France.
• There is only 20-30 grams of the element in the
  earth's crust at any one time. No weighable
  quantity of the element has been prepared or
  isolated. There are about 20 known isotopes.
  Francium is very rare and is found only as very
  small traces in some uranium minerals. It has
  never been isolated as the pure element. Since it
  is so radioactive, any amount formed would
  decompose to other elements.

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Francium Poem

• From France you did make your appearance one day
• Only to discover, you were not here to stay
• Perey was your hero, who brought you your fame
• And because of her homeland, Francium is your
  name
• Fr is the symbol youre known for by few
• But the rest of us, would not have a clue
• What a mystery you bring to scientist everywhere
• And even to those of us, who dont really care
• You distribute yourself throughout the earths
  crust
• And because of your size a microscopes a must!
• Keep up your bright metallica shine
• And maybe one day a future youll fine.

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Resources

• http//chemistry.allinfoabout.com/periodic/periodi
  ctable.html
• http//www.newton.dep.anl.gov/askasci/chem99/chem9
  9189.htm
• http//chemistry.about.com/library/blper5.htm