because it is radioactive and because it is an alkali metal. but you shouldn't worry about francium because it is one of the rarest elements in the world with as little as 1 gram at any given time.
Francium is strongly radioactive and consequently dangerous.
Francium is not illegal. It is just extremely rare; there is only an ounce of it in the earth's crust at a time.
No, francium is not considered explosive. Instead of exploding, it will go through beta decay, which could cause it to melt when it heats itself.
Francium is a strongly radioactive chemical element.
Francium doesn't exist in the environment.
Francium is a radioactive element !
Yes.
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 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.
As francium is a chemical element, it is made up of protons, neutrons and electrons.
Francium is a radioacive chemical element; francium is natural but also may be prepared in laboratory.
Francium is a solid.