Francium Phone Cases - iPhone and Android

Description: A thought-provoking Francium design. Francium is a chemical element with symbol Fr and atomic number 87. It used to be known as eka-caesium and actinium K. It is the second-least electronegative element, behind only caesium, and is the second rarest naturally occurring element (after astatine). Francium is a highly radioactive metal that decays into astatine, radium, and radon. Brought to you by Periodic-Tees.com