The terms good or bad are not adequate for chemical elements.
No good, no bad facts; francium is a very rare chemical element, also very unstable. The chemistry of francium is largely unknown. But is a radioactive element and the radioactivity is frequently dangerous.
The estimated thermal conductivity of francium is 15 W/m.K.
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.