87

Fr

Francium
[ 223 ]
 Historical Information

Francium was discovered in 1939 by Marguerite Perey of the Curie Institute in Paris, (France) but its existence was predicted by Mendeleev during the 1870's.

Basic Information Shells
  • Name:Francium
  • Symbol: Fr
  • Atomic number: 87
  • Atomic weight:[ 223 ]
  • Standard state: a solid at 298 K
  • Group in periodic table: 1
  • Group name:Alkali metal
  • Period in periodic table: 7
  • Block in periodic table: s-block
  • Classification: Metallic
 Francium
Uses Trivia
  • It has no uses.

Francium occurs as a result of α disintegration of actinium. Francium is found in uranium minerals, and can be made artificially by bombarding thorium with protons. It is the most unstable of the first 101 elements.