Francium is not a commercial product.
Francium is very rare and would be correspondingly expensive if you were able to purchase any, which you probably aren't.
- The total quantity of francium in the earth crust is approx. 30 g. - The most stable isotope of francium, 223Fr, has a half life of only 21,8 min. - Obtaining francium artificially by the intermediate of nuclear reactions, is also very difficult and expensive.
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.
Examples: californium, americium, curium, iridium, rhenium, osmium, palladium, francium, astatine, technetium.
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.