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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.
Is francium combustible?
Not known today but probably francium don't burn.
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.
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.
Is francium a metalliod?
Francium is a metal.
How was francium named francium?
Francium was named after France, the country it was dicovered in.
What are chemical properties of francium?
The chemistry of francium is not known; francium has properties similar to caesium.
Why is the density of francium unknown?
We haven't sufficient francium for a measurement; also francium is autovaporized.
What is francium made out of?
As francium is a chemical element, it is made up of protons, neutrons and electrons.
Is francium synthetic and radioactive?
Francium is a radioacive chemical element; francium is natural but also may be prepared in laboratory.
How expensive is francium?
Francium is not a commercial product.
