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Uranium-214 is the lightest known isotope of uranium. It was discovered at the Spectrometer for Heavy Atoms and Nuclear Structure (SHANS) at the Heavy Ion Research Facility in Lanzhou, China in 2021, produced by firing argon-36 at tungsten-182. It alpha-decays with a half-life of 0.5 ms.
Of the 26 "monoisotopic" elements that have only a single stable isotope, all but one have an odd atomic number—the single exception being beryllium. In addition, no odd-numbered element has more than two stable isotopes, while every even-numbered element with stable isotopes, except for helium, beryllium, and carbon, has at least three.
This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds.
In total, 28 isotopes of uranium have been identified, ranging in mass number from 214 [119] to 242, with the exception of 220. [7] [120] Among the uranium isotopes not found in natural samples or nuclear fuel, the longest-lived is 230 U, an alpha emitter with a half-life of 20.23 days. [7]
Uranium-235 (235 U or U-235) is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope uranium-238, it is fissile, i.e., it can sustain a nuclear chain reaction. It is the only fissile isotope that exists in nature as a primordial nuclide. Uranium-235 has a half-life of 703.8 million years.
This is when uranium glass reached the height of its popularity in the United States between 1958 and 1978, with more than 4 million pieces of decorative uranium produced, according to Oak Ridge ...
As a result, many of the 41 even-numbered elements from 2 to 82 have many primordial isotopes. Half of these even-numbered elements have six or more stable isotopes. The lightest stable even-even isotope is 4 2 He and the heaviest is 208 82 Pb. These are also the lightest and heaviest known doubly magic nuclides. [1] 208 82 Pb is the final ...
Diageo, the London-based spirits giant that owns more than 200 brands, on Friday unveiled the “world’s lightest whisky glass bottle,” a 70-centiliter Johnnie Walker Blue Label Ultra.