Isotopes


Isotopes are two or more atoms of the same chemical element with equal atomic numbers and mass numbers. The difference between them is found in the number of neutrons. Isotopes can differ into some characteristics, such as density and its applicability, as in medicine, industry and scientific research. In medicine, an example of a radioisotope is iodine-131 that is used in the treatment of thyroid cancer because it accumulates in this organ, its gamma radiations destroy the cancer cells.
 Reference: MARTINELLI, LUIZA. Unraveling Environmental Issues with Stable Isotopes. 1st Edition, Brazil: Editora Oficina de textos, 2009. 144p.

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