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Francium-223 is the most stable isotope, with a half-life of 21.8 minutes, [8] and it is highly unlikely that an isotope of francium with a longer half-life will ever be discovered or synthesized. [22] Francium-223 is a fifth product of the uranium-235 decay series as a daughter isotope of actinium-227; thorium-227 is the more common daughter. [23]
Francium compounds are compounds containing the element francium (Fr). Due to francium being very unstable, its salts are only known to a small extent.
However, it would appear that francium perchlorate has been formed, as it coprecipitates with caesium perchlorate, and several other insoluble francium salts are similarly known (Hyde, E.K., Radiochemical Methods for the Isolation of Element 87 (Francium), J. Am. Chem. Soc., 1952, 74, 4181) The article also quotes a value for the Pauling ...
Good work Cryptic! -- Rmrfstar 22:24, 18 April 2007 (UTC) Alrighty, I removed the solubility statement. Although it did come from an encyclopedia, the information therein may not have been updated in several years. Also, Hyde's experiment directly contradicted the statement. I do mean that Hulubei's work was accurate, not just "good".
Francium (87 Fr) has no stable isotopes, thus a standard atomic weight cannot be given. Its most stable isotope is 223 Fr with a half-life of 22 minutes, occurring in trace quantities in nature as an intermediate decay product of 235 U. Of elements whose most stable isotopes have been identified with certainty, francium is the most unstable.
How long do turkey, trimmings stay good for in the fridge? Turkey and trimming leftovers can be kept in the refrigerator for three to four days, according to FoodSafety.gov.That means meat stored ...
However, it is possible that some isotopes that are now considered stable will be revealed to decay with extremely long half-lives (as with 209 Bi). This list depicts what is agreed upon by the consensus of the scientific community as of 2023. [1] For each of the 80 stable elements, the number of the stable isotopes is given.
3. Cuisine Adventures Puff Pastry Bites. $11.99 for 48 pieces. Hot little fingers foods are always welcome at a holiday party. This box has bite-sized puff pastry bites in four flavors: roasted ...