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Medical applications use artificial radioisotopes that have been produced from stable isotopes bombarded with neutrons.
tritium), however, is a radioactive isotope, the other two being stable.
Every chemical element has one or more radioactive isotopes.
For example, hydrogen, the lightest element, has three isotopes, which have mass numbers 1, 2, and 3.
Radiotherapy commonly is used to treat cancer and other conditions involving abnormal tissue growth, such as hyperthyroidism.
Beams of subatomic particles, such as protons, neutrons, or alpha or beta particles, directed toward diseased tissues can disrupt the atomic or molecular structure of abnormal cells, causing them to die.
Radioactive isotopes have many useful applications. In particular, they are central to the fields of nuclear medicine and radiotherapy.More than 1,000 radioactive isotopes of the various elements are known.Approximately 50 of these are found in nature; the rest are produced artificially as the direct products of nuclear reactions or indirectly as the radioactive descendants of these products.cobalt-60 is extensively employed as a radiation source to arrest the development of cancer.Radon, generated by the radioactive decay of radium, is present in air.
Organic materials typically contain small amounts of radioactive carbon and potassium.Our editors will review what you’ve submitted and determine whether to revise the article.
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