Francium
From Simple English Wikipedia, the free encyclopedia
Francium is a chemical element. It has the chemical symbol Fr. It has the atomic number 87. It is a metal. In chemistry it is placed in a group of metal elements named the alkali metals. Francium is very radioactive. It is found in very small amounts in uranium and thorium ores. It has the lowest electronegativity and electron affinity of all the chemical elements.