Francium is a highly radioactive element and is one of the rarest naturally occurring elements on Earth. It is represented by the symbol Fr and has an atomic number of 87. Discovered in 1940 by scientists Marguerite Perey, francium is part of the alkali metals group in the periodic table, which also includes elements like lithium and sodium. Due to its extreme instability, francium has a very short half-life, making it difficult to study. Because of its rarity and radioactivity, francium has no significant commercial applications. It is primarily of interest to scientists studying the properties of heavy elements and their behavior. Francium can be produced in minute amounts through the decay of actinium, but it is estimated that