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Francium has about 33 isotopes, whose half-lives range from 215Fr at 86ns up to 223Fr at 21.8m.
As to the 'why', - that is the observed half-life is the answer. It is the rate at which the nucleus disintegrates.
[ Least common multiple of orbital mechanics is my guess. But we have problems even with the three-body experiment. How much more complex is the 200-odd body experiment. ]
The best offer is that certain arrangements of protons and neutrons have interactions such that their stability is limited in time.
With better understanding of sub-atomic particles, clever folk may know the answer in the future.
Wiki User
∙ 11y ago
Wiki User
∙ 14y ago- The half life of the most stable isotope of francium (223Fr) is only 21,8 minutes.
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Why are you unable to buy fluorine or francium in the store?
well i don't know about fluorine, but francium only has a half life of only 22 minutes, witch means in 22 minutes half of it will already be gone, so that's why you can't buy francium.
Why was francium hard to discover?
because it only has a half life of 22 minutes so by the time any one could get to it the francium had died
Why is francium less cared in chemistry?
Francium is often ignored because it is the second rarest element on the planet. Only about 30 grams of it exist in Earth's crust at any given time. Nobody has been able to have more than a few thousand francium atoms in one place. Francium is also has a very short half-life, 22 minutes. Meaning that if you have a sample of francium half of it will have decayed into other elements after 22 minutes.
How easy is it to cut francium?
Francium is extremely unstable. The most stable isotope of francium has a half-life of only about 22 minutes. Other isotopes of francium have half-lives measured in microseconds. Scientists predict there is less than one ounce of francium in Earth's crust at any one time. Because of this instablilty, it would be much easier to go get a cup of coffee and wait for francium to cut itself apart.
Why is francuim rare?
Francium is rare because if its incredibly short half-life. The longest-lived isotope of francium has a half-life of 22 minutes. This means that if you have a given mass of francium, half of it will have decayed into something else after a 22 minute period. Francium is itself a product of Radioactive decay, however it decays so quickly after forming that there is never a large amount of it.
Why was francium made?
Francium occurs in nature (in very, very small quantities) as a decay product of other radioactive materials. "Why" is kind of a pointless question: it just is. it is extremely ephemeral. The longest half-life of any isotope of Francium is 22 minutes.
Why isn't there a lot of evidence for the properties of francium?
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.
Why did it take 80 years to discover francium?
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.
Why did it take over eighty years to discover Francium?
It is highly unstable. The MOST stable isotope of this stuff has a half life of 22 minutes.
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.
What are the scientific researches using with francium?
Uses of francium are limited to only scientific research.This is mostly because it is difficult to find or make and it has a very short half life (it decays quickly into other elements).Francium (and not fracium) is used only in specialized laboratories for reseach in chemistry in physics.With a half life of only 22 minutes, francium is not only completely useless, it is also not likely that anyone could gather enough of it together to do anything meaningfull with it.Francium has only some rare applications in research laboratories; see the link.Unfortunately, the uses for the radioactive element Francium are limited to only scientific research. This is mostly because it is difficult to find or make and it has a very short half life (it decays quickly).However this element is the one element that is the most reactive to water because it is the most reactive alkali metal, a family of metals that all react to water. This basically means if you drop a large sample of Francium into a tub of water it will explode.there is no known uses for francium.there is not much of Francium around, and what there is or is made does not last for long (disintegrates into lighter elements in a few hours). probably it is being investigated or used in some physics experiments somewhere and it seems unlikely to show up as a food additive at your grocery store anytime soon.
What is francium's state at room temperature?
Francium is a liquid at room temperature. Hope this helps
