Isotopes:

There are 33 isotopes discovered so far in Francium. The longest living isotope survives for 22 minuets. None of the isotopes in Francium are stable, meaning they are very reactive.

History:

Francium was discovered in 1939 by Marguerite Perey. She was working at the Curie Institute in Paris, France. The Curie institute was founded by Marie Curie and Claudis Regaurd in 1921. It is a non-profit foundation that is one of the leading medical, biophysical research centers in the world. It was named after France, the country it was discovered in.

Margeurite Perey:

As I said before Margeurite Perey was the one who discovered Francium. She was born in Villemomble, France in 1909. She started work as an assistant at the Cuie Institute in 1929. She discovered Fermium in 1939 then a year later she moved to the University of Strasbourg, becoming a professor of nuclear chemistry in 1949. The was she found Francium was buy purifying samples of Lanthanum.

<===== Margeurite Perey