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When there is no public data on the element in its pure form, price of a compound is used, per mass of element contained. This implicitly puts the value of compounds' other constituents, and the cost of extraction of the element, at zero. For elements whose radiological properties are important, individual isotopes and isomers are listed. The ...
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.
Francium, 87 Fr; Francium ... Group Period Block Electron configuration Electrons per shell PHYSICAL ... "E118": E1–E118, discovered, existing full set, mentioned ...
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.
Francium is a chemical element that has the symbol Fr and atomic number 87. Date: 2007: Source: ... You are free: to share – to copy, distribute and transmit the work;
A mortgage point could cost 1% of your mortgage amount, which means about $5,000 on a $500,000 home loan, with each point lowering your interest rate by about 0.25%, depending on your lender and loan.
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 ...