Francium is a true chemical element, not an example.
Caesium is similar to francium.
Anything contain francium.
For the most part none do. However, some ceramics contain uranium in their glazes and uranium may form francium as it decays. As a result, some plates may or may not contain an atom of francium at any given time.
Because Francium is so highly radioactive, it disintegrates before it can be collected. The half-life of the least stable isotope of Francium, Francium-215, is a mere 86 nanoseconds. The half-life of the most stable isotope of Francium, Francium-223, is still only 22 minutes. Scientists cannot gather Francium from nature due to the fact that even if they do come across some, it will soon disintegrate into other elements like barium. If scientists want to study Francium, they must make Francium atoms in a laboratory.
Francium can form cations with the charge +1.
Francium isn't available for several reasons:It is highly radioactiveIt will react extremely violently with air and waterIt is highly toxicIt is very rare (about 21 grams exist in the entire world)There is no dealer/seller who can or will sell you Francium, whatever they say about it.
Fr is the symbol for the radioactive element francium.
Francium hasn't applications.
For the most part none do. However, some ceramics contain uranium in their glazes and uranium may form francium as it decays. As a result, some plates may or may not contain an atom of francium at any given time.
Francium has any use.
Francium is not reactive as it is a very weak and small substance of an atom in the element. Francium is used useless things, so therefore it is not reactive.
These effects were not studied for francium but because francium is very radioactive it is harmful.
Francium doesn't exist in the environment.
Francium hasn't ores; infinitesimal amounts of francium exist in some uranium ores.
This compound don't exist today.
Impossible; francium hasn't ores - infinitesimal amounts of francium exist in some uranium ores.
See this link for the history of francium discovery.
francium is a rare element but might be useful in some ways.
Not really but some of the papers relating to it were published in "Physics & Astronomy". "Production of Francium". Francium. SUNY Stony Brook Physics & Astronomy. 2007-02-20.