The chemistry of francium is not known; a possible hydroxide (not hydrate) should be FrOH.
Francium doesn't exist in air.
Francium doesn't exist in the environment.
Francium can be solid, liquid or gaseous.
Any link exist between francium and the economy.
Francium exist in uranium and thorium ores but it is not exploitable.
Francium hasn't ores; infinitesimal amounts of francium exist in some uranium ores.
Natural francium exist in uranium and thorium ores.Artificial francium is obtained in particle accelerators.
Impossible; francium hasn't ores - infinitesimal amounts of francium exist in some uranium ores.
Francium exist only in infinitesimal concentrations in uranium ores; the identification of francium is very difficult.
Francium has seven electron shells.
Francium exist in infinitesimal traces in thorium and uranium ores.
Francium sulfide is the compound that contains francium and sulfur.