Francium is not used medically.
Francium has not practical uses; it was used for studies in spectroscopy and quantum chemistry.
NO1
If a lot of francium was reacted with water and you were to stand close to it, it could probably obliterate you, that is if a lot of it was used.
Francium was named after France, the country it was dicovered in.
Francium is very radioactive and very difficult to obtain; heating of francium due to the decay leads to instantaneous vaporization of francium.
Francium hasn't practical uses.
Francium has any uses.
Francium was used only for scientific researches.
Francium has not now practical applications; francium is used only for scientific studies.
Francium hasn't a practical use.
Francium hasn't today practical applications; francium is used in laboratories only for scientific studies.
Francium has not practical uses; it was used for studies in spectroscopy and quantum chemistry.
Francium has any use.
No practical applications. Francium is used only for scientific studies.
Francium is used only in specialized laboratories, for researches.
Francium hasn't practical applications; it is only a subject of scientific research.
Francium hasn't practical applications; it is only a subject of scientific research.