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What is some historical information about francium?
See this link for the history of francium discovery.
What is the history of francium?
Francium has a long and interesting history of discovery, difficult to be described on WA.For details see this link.
Why did it take nearly 80 years to discover francium?
Francium exist only in infinitesimal traces in thorium and uranium ores and is very unstable. (Read about its discovery history in wikipedia link: en.wikipedia.org/wiki/Francium#History
What is the discovery of francium in the history of the periodic table?
Francium was discovered by chance by Marguerite Perey in 1939 during a study on actinium-227: she observed an energy level of radiation possibly attributable to a new element. After some chemical experiments she was sure that the radiation is from a new chemical element, after this called francium. The atomic number of francium in the periodic table is 87.
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.
Why did it take long for francium's discovery?
Francium is a natural chemical element but the total quantity of francium in the earth crust is only approx. 30 g. Francium has ca. 40 isotopes and isomers but only two are natural: 221Fr (in the neptunium decay chain series) and 223Fr (in the actinium decay chain series). Artificially preparation of francium isotopes is also extremely difficult and expensive; and the chemistry and physics of isotopes was developed essentially after 1940. Supplementary, the most stable isotope of francium has a half life of only 21,8 minutes and is strongly radioactive; the half lives of the artificially prepared isotopes are more smaller. This is sufficient reason to explain why francium was later discovered and why even today is only slightly studied.
Was the discovery of Francium delayed because of a lack of technology at the time among other reasons?
Francium was found 80 years after the others because it is very rare on the Earths surface and there is less than an ounce of it in the earths crust. Also the fact that the technology was limited didn't help.
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.
