Francium bromide (FrBr) is a chemical compound composed of francium (Fr) and bromine (Br) atoms. Francium is an extremely rare and highly radioactive element, and due to its scarcity and radioactivity, compounds containing francium are very challenging to study and work with.

Francium is an alkali metal in the same group as sodium and potassium on the periodic table, and it would be expected to exhibit similar chemical behavior, albeit with some unique characteristics due to its radioactive nature. Alkali metals are highly reactive and tend to form compounds with halogens like bromine.

However, the extreme radioactivity of francium, its short half-life, and the challenges of handling and studying it make it difficult to produce and work with significant quantities of francium compounds, including francium bromide. Research related to francium and its compounds is primarily focused on advancing our understanding of fundamental atomic and nuclear physics.