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Francium exist only in infinitesimal concentrations in uranium ores; the identification of francium is very difficult.
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∙ 14y ago
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Francium invented later?
Francium was discovered by Marguerite Perey in 1939.
When was francium discovered and by whom?
Radon (element #86) was discovered in 1900. Francium (#87) was discovered in 1939. Francium is the second rarest naturally occurring element. It is also one of the most reactive elements known to man and has a high isotopic instability, with a half life of about 22 minutes. Francium is a part of the Alkali metals group, which are all quite reactive with water and air, Francium being the most reactive. Francium will react explosively upon contact with air, and you wouldn't want to be there if it came into contact with water.
How was francium named francium?
Francium was named after France, the country it was dicovered in.
Is francium combustible?
Not known today but probably francium don't burn.
What is a use of francium oxide and What is a compound of francium Is a compound francium oxide?
Francium has not applications and the oxide cannot be prepared.
What is the cost for 10g of francium?
Francium can form cations with the charge +1.
Is francium a metalliod?
Francium is a metal.
What are some things that contains francium?
Francium is a true chemical element, not an example.
What element has the lowest electronectivity?
Francuim is thought to have the lowest electro-negativity.Linus Pauling estimated that francium had the same electro-negativity as Caesium = 0.7. The electro-negativity of caesium was later revised to 7.9 but francium is so unstable and reactive that it is not possible to obtain samples of pure francium to accurately determine its electro-negativity.
Why is the density of francium unknown?
We haven't sufficient francium for a measurement; also francium is autovaporized.
What are chemical properties of francium?
The chemistry of francium is not known; francium has properties similar to caesium.
Why can you not use francium?
Francium is very radioactive and very difficult to obtain; heating of francium due to the decay leads to instantaneous vaporization of francium.
