These effects were not studied for francium but because francium is very radioactive it is harmful.
As a strongly radioactive element francium is dangerous for humans beings.
Being very radioactive francium is dangerous. Irradiation destroy body cells and cause cancers.
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 is supposed to be very reactive but the chemistry of francium is not known.
As a strongly radioactive element francium is dangerous for humans beings.
Francium doesn't exist in the environment.
Being very radioactive francium is dangerous. Irradiation destroy body cells and cause cancers.
Francium is a true chemical element, not an example.
Francium has any use.
Francium hasn't ores; infinitesimal amounts of francium exist in some uranium ores.
Impossible; francium hasn't ores - infinitesimal amounts of francium exist in some uranium ores.
See this link for the history of francium discovery.
francium is a rare element but might be useful in some ways.
ummm... Oxygen's health effects are basicly breathing and all of the tools doctors use to help people breathe
The health effects of ozone include skin cancer and cataract. It might also lead to suppression of immune system.
Plutonium is extremely toxic and radioactive.