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Xenon-136 is an isotope of xenon that undergoes double beta decay to barium-136 with a very long half-life of 2.11 × 10 21 years, more than 10 orders of magnitude longer than the age of the universe ((13.799 ± 0.021) × 10 9 years). It is being used in the Enriched Xenon Observatory experiment to search for neutrinoless double beta decay.
For example, because Kr is lighter than Xe, Kr should also have escaped in a neutral wind. Yet the isotopic distribution of atmospheric Kr on Earth is significantly less fractionated than atmospheric Xe. [16] Mass fractionation of nine atmospheric xenon isotopes over Earth's history compared to modern air per atomic mass unit. [15]
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.
More than 40 unstable xenon isotopes undergo radioactive decay, and the isotope ratios of xenon are an important tool for studying the early history of the Solar System. [28] Radioactive xenon-135 is produced by beta decay from iodine-135 (a product of nuclear fission ), and is the most significant (and unwanted) neutron absorber in nuclear ...
Those that may in the future be found to be radioactive are expected to have half-lives longer than 10 22 years (for example, xenon-134). [citation needed] In April 2019 it was announced that the half-life of xenon-124 had been measured to 1.8 × 10 22 years.
Pages in category "Isotopes of xenon" The following 60 pages are in this category, out of 60 total. ... Xenon-124; Xenon-125; Xenon-125m1; Xenon-125m2; Xenon-126 ...
Isotopes of xenon This page was last edited on 8 October 2010, at 02:01 (UTC) . Text is available under the Creative Commons Attribution-ShareAlike License 3.0 ; additional terms may apply.
Although the noble gases are generally unreactive elements, many such compounds have been observed, particularly involving the element xenon. From the standpoint of chemistry, the noble gases may be divided into two groups: [citation needed] the relatively reactive krypton (ionisation energy 14.0 eV), xenon (12.1 eV), and radon (10.7 eV) on one ...