francium Definition

atomic number 87, fr, virginium, atomic number, actinon, bohrium, metallic element, roentgenium, mendelevium, meitnerium, chemical element, mesothorium, ununnilium, transactinide, radiostrontium, ununtrium, ununoctium, decipium, philippium, caesium, unnilseptium, thorianite, radioelement, cesium, isotope, radiothorium, wasium, samarskite, ilmenium, actinium, radioactive, lanthanite, pelopium, rubidium, americium, relative atomic mass, davyum, atomic weight, pollucite, protactinium, euxenite, polonium, coronium, unnilennium, actinoid, ekaboron, pentabasic, osmious, mass number, ytterbite, eschynite, diiodide, cerite, calutron, binary compound, hexabasic, thulia, polyiodide, strontia, rhenium, lutetium, palladous, stibonium, alkali metal, astatine, metalammonium, transition element, quantivalence, isotone, californium, molybdous, terbia, iodyrite, selenonium, tetradymite, iodism, neutron number, ionium, protyle, neptunium, tysonite, ceriferous, molybdic, actinide, fluocerite, tellurate, euclase, oxidation state, seaborgium, strontium, bismuthic, tervalent, osmate, terbium oxide, dysprosium, osmium, iridosmine, osmiridium, bismuthous, lawrencium,