It is supposed that all atoms are similar to a sphere.
As Francium is an Alkaline metal it has a lone electron in an outermost S orbital. Therefore the atom is perfectly spherical.
Not known today but probably francium don't burn.
Francium has not applications and the oxide cannot be prepared.
Francium is a metal.
Francium was named after France, the country it was dicovered in.
The chemistry of francium is not known; francium has properties similar to caesium.
We haven't sufficient francium for a measurement; also francium is autovaporized.
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 not a commercial product.
Francium is not a commercial product.
Francium has not a smell.