The main hazard is its radioactivity. It is so radioactive it will vaporize itself because of the tremendous heat made by its radioactivity, but you don't have to worry about it since you can't even collect a nanogram of it.
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.
no known odor for francium
Francium is not explosive.
Francium is a radioactive element.
Francium is radioactive and rubidium not. Also the electron configuration, atomic number, physical properties, hazards etc. are different.
Francium was named after France, the country it was dicovered in.
Not known today but probably francium don't burn.
Francium has not applications and the oxide cannot be prepared.
Francium can form cations with the charge +1.
Francium is a metal.
Francium is a true chemical element, not an example.
We haven't sufficient francium for a measurement; also francium is autovaporized.
The chemistry of francium is not known; francium has properties similar to caesium.
Francium is very radioactive and very difficult to obtain; heating of francium due to the decay leads to instantaneous vaporization of francium.
Francium is a radioacive chemical element; francium is natural but also may be prepared in laboratory.
As francium is a chemical element, it is made up of protons, neutrons and electrons.