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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.
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Why did it take the scientists nearly 80 years to discover francium?
The total amount of the francium in the Earth crust is approx. 30 grams.
Why did it take scientists nealy another 80 years to discover francium?
The total amount of the francium in the Earth crust is approx. 30 grams.
Hy did it take scientists nearly anther 80 years to discover francium?
The total amount of the francium in the Earth crust is approx. 30 grams.
Why did it take scientists nearly another eighty years more to discover francium?
The total amount of the francium in the Earth crust is approx. 30 grams.
Why did it take scientists nearly another 80 years to discover francium as simple as possible?
The total amount of the francium in the Earth crust is approx. 30 grams.
All alkali metals except francium had been disconerd by 1860 why did it take scientists another 80 years to find francium?
Francium is the second rarest element on earth so that's probably why it took a little longer to discover.
All of the alkali metals except francium had been discovered by 1860 Why did it take scientists nearly another 80 years to discover francium?
Back then they did not know what radioactivity was There wasn't the right equipment to discover it at the time It comes from Uranium, which doesn't last for that long...it has a half life of 21 minutes Very rare, 30g in the world at one time
All of the alkali metals except francium were discovered by 1860. Why did it take scientists nearly another 80 years to discover francium?
Francium is named after France, which is where the element was isolated in 1939 by Marguerite Perey. Traces of francium occur naturally in uranium-containing minerals. francium is very rare so it took time to find it (i think)
How long does it take the francium explosion to stop?
Francium is not an explosive.
Why did it take scientists nearly another 80 years to dicover Francium?
cause i needed a big pis and then got tired it was my fault it took so long [[[[:)
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
Why did it take another 80 years to discover francium after all the other alkali metals?
Francium is a very unstable element it is estimated that only about 30 grams exist in the earth's crust. Scientists knew that an element like Francium should exist but had yet to find it. It was found in very small amount in uranium ore (only a few atoms) noticed by it's distinct radiation as the most stable isotope has a half-life of on 22 minutes.
