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- Radionuclide abstract "A radionuclide, or a radioactive nuclide, is an atom with an unstable nucleus, characterized by excess energy available to be imparted either to a newly created radiation particle within the nucleus or via internal conversion. During this process, the radionuclide is said to undergo radioactive decay, resulting in the emission of gamma ray(s) and/or subatomic particles such as alpha or beta particles. These emissions constitute ionizing radiation. Radionuclides occur naturally, or can be produced artificially.Radionuclides are often referred to by chemists and physicists as radioactive isotopes or radioisotopes. Radioisotopes with suitable half-lives play an important part in a number of technologies (for example, nuclear medicine). Radionuclides can also present both real and perceived dangers to health.The number of radionuclides is uncertain because the number of very short-lived radionuclides that have yet to be characterized is extremely large and potentially unquantifiable. Even the number of long-lived radionuclides is uncertain (to a lesser degree), because many "stable" nuclides are calculated to have half-lives so long that their decay has not been experimentally measured. The total list of nuclides contains 90 nuclides that are, in theory, stable, and 254 total stable nuclides that have not been observed to decay. In addition, however, there exist 34 primordial radionuclides that exist from the creation of the solar system, plus another 50 radionuclides detectable in nature as daughters of these, plus a few produced by cosmic radiation. Including artificial radionuclides, about 650 radionuclides that have been experimentally observed to decay, with half-lives longer than 60 minutes (see list of nuclides for this list). Of all these, less than a hundred natural radionuclides are known (they have been observed on Earth, but not as a consequence of human activity).Including artificially produced nuclides, more than 3300 nuclides are known (including ~3000 radionuclides), many of which (> ~2400) with decay half-lives shorter than 60 minutes. This list expands as new radionuclides with very short half-lives are characterized.All elements form a number of radionuclides, although the half-lives of many are too short for them to be observed in nature. Even the lightest element, hydrogen, has a well-known radioisotope, tritium. The heaviest elements (heavier than bismuth) exist only as radionuclides. For every chemical element, many radioisotopes that do not occur in nature (due to short half lives or the lack of an ongoing natural production mechanism), have been produced artificially.".
- Radionuclide wikiPageExternalLink isotopes.gov.
- Radionuclide wikiPageExternalLink full.
- Radionuclide wikiPageExternalLink inf56.html.
- Radionuclide wikiPageExternalLink livechart.
- Radionuclide wikiPageExternalLink index.html.
- Radionuclide wikiPageExternalLink level98.
- Radionuclide wikiPageExternalLink chart.
- Radionuclide wikiPageID "37245".
- Radionuclide wikiPageRevisionID "604101719".
- Radionuclide hasPhotoCollection Radionuclide.
- Radionuclide subject Category:Isotopes.
- Radionuclide subject Category:Nuclear_chemistry.
- Radionuclide subject Category:Nuclear_physics.
- Radionuclide subject Category:Radioactivity.
- Radionuclide type Abstraction100002137.
- Radionuclide type Atom114619225.
- Radionuclide type Isotope114619658.
- Radionuclide type Isotopes.
- Radionuclide type Matter100020827.
- Radionuclide type Part113809207.
- Radionuclide type PhysicalEntity100001930.
- Radionuclide type Relation100031921.
- Radionuclide type Substance100019613.
- Radionuclide comment "A radionuclide, or a radioactive nuclide, is an atom with an unstable nucleus, characterized by excess energy available to be imparted either to a newly created radiation particle within the nucleus or via internal conversion. During this process, the radionuclide is said to undergo radioactive decay, resulting in the emission of gamma ray(s) and/or subatomic particles such as alpha or beta particles. These emissions constitute ionizing radiation.".
- Radionuclide label "Izotopy promieniotwórcze".
- Radionuclide label "Radio-isotoop".
- Radionuclide label "Radioisotope".
- Radionuclide label "Radioisótopo".
- Radionuclide label "Radioisótopo".
- Radionuclide label "Radionuclide".
- Radionuclide label "Radionuclide".
- Radionuclide label "Radionuklid".
- Radionuclide label "Радиоактивные изотопы".
- Radionuclide label "نويدة مشعة".
- Radionuclide label "放射性同位体".
- Radionuclide label "放射性同位素".
- Radionuclide sameAs Radionuklid.
- Radionuclide sameAs Radionuklid.
- Radionuclide sameAs Ραδιοϊσότοπο.
- Radionuclide sameAs Radioisótopo.
- Radionuclide sameAs Isotopo_erradioaktibo.
- Radionuclide sameAs Radioisotope.
- Radionuclide sameAs Radionuklida.
- Radionuclide sameAs Radionuclide.
- Radionuclide sameAs 放射性同位体.
- Radionuclide sameAs 방사성_동위_원소.
- Radionuclide sameAs Radio-isotoop.
- Radionuclide sameAs Izotopy_promieniotwórcze.
- Radionuclide sameAs Radioisótopo.
- Radionuclide sameAs m.098yw.
- Radionuclide sameAs Q192900.
- Radionuclide sameAs Q192900.
- Radionuclide sameAs Radionuclide.
- Radionuclide wasDerivedFrom Radionuclide?oldid=604101719.
- Radionuclide isPrimaryTopicOf Radionuclide.