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Radon - Isotopes | | Radon - Isotopes: Encyclopedia II - Radon - Isotopes | | There are twenty known isotopes of radon. The most stable isotope is radon-222, which is a decay product (daughter product) of radium-226, has a half-life of 3.823 days and emits radioactive alpha particles. Radon-220 is a natural decay product of thorium and is called thoron. It has a half-life of 55.6 seconds and also emits alpha rays. Radon-219 is derived from actinium, is called actinon, is an alpha emitter an ...
See also:Radon, Radon - Notable characteristics, Radon - Applications, Radon - History, Radon - Occurrence, Radon - Compounds, Radon - Isotopes, Radon - Precautions, Radon - Radon therapy | | | Radon, Radon - Applications, Radon - Compounds, Radon - History, Radon - Isotopes, Radon - Notable characteristics, Radon - Occurrence, Radon - Precautions, Radon - Radon therapy, Johann Radon | | |
| | | Radon: Encyclopedia II - Radon - Isotopes
Radon - Isotopes
There are twenty known isotopes of radon. The most stable isotope is radon-222, which is a decay product (daughter product) of radium-226, has a half-life of 3.823 days and emits radioactive alpha particles. Radon-220 is a natural decay product of thorium and is called thoron. It has a half-life of 55.6 seconds and also emits alpha rays. Radon-219 is derived from actinium, is called actinon, is an alpha emitter and has a half-life of 3.96 seconds.
The full decay series of uranium-238 which produces natural radon is as follows (with half-lives): uranium-238 (4.5 x 109 y), thorium-234 (24.1 d), protactinium-234 (1.18 m), uranium-234 (250,000 y), thorium-230 (75,000 y), radium-226 (1,600 y), radon-222 (3.82 d), polonium-218 (3.1 m), lead-214 (26.8 m), bismuth-214 (19.7 m), polonium-214 (164 micro-s), lead-210 (22.3 y), bismuth-210 (5.01 d), polonium-210 (138 d), lead-206 (stable)!
Other related archives1900, 1908, 1923, 1984, 20th century, Bad Kreuznach, Bq, Earth's atmosphere, Environmental Protection Agency, European Union, Friedrich Ernst Dorn, Germany, Japan, Johann Radon, Latin, Limerick nuclear power plant, Misasa, Pennsylvania, Radon, Orne, Robert Whytlaw-Gray, United States, Uranium hexafluoride, William Ramsay, actinium, alpha particles, atomic number, bismuth, carcinogenic, chemical element, clathrates, daughter product, decay product, dwellings, fluorine, freezing point, gas, granitic, ground water, half-life, hemorrhoids, hot springs, hydrologic, hypertension, isotope, isotopes, lead, lung, lung cancer, lungs, noble gas, orange, pCi, periodic table, polonium, protactinium, radiation, radioactive, radiotherapy, radium, radon fluoride, red, rivers, smokers, spring waters, standard temperature and pressure, streams, surface water, thorium, toothpaste, uranium, uranium-238, volatilization, yellow
 Adapted from the Wikipedia article "Isotopes", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki |
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