SEARCH Articles Figures Tables Alkali metals francium Astatine and Francium Fr FRANCIUM Francium 2 The Elements Francium abundance Francium discovery Francium electronic structure Francium elements Francium history, occurrence, uses Francium ionization energy Francium ions Francium isotopes and their properties Francium physical properties Francium properties Francium, electron configuration Francium—solid, liquid, or gas Isotopes of francium Melting point of francium Perey, Marguerite francium discovered Thorium francium from