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radioactive isotope, any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alpha, beta, and gamma rays. A brief treatment of radioactive isotopes follows.
A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is a nuclide that has excess numbers of either neutrons or protons, giving it excess nuclear energy, and making it unstable.
Key points. Radioactive decay occurs when a radioactive atom gives off radiation in the form of energy or particles. Radioactive atoms give off radiation to become more stable. There are four types of radiation given off by radioactive atoms.
Some isotopes are unstable and emit radiation in the form of particles and energy to form more stable elements. Some forms of radiation are dangerous. These are called radioactive isotopes or radioisotopes (figure \(\PageIndex{b}\)). During radioactive decay, one type of atom can change into another type of atom in this way (figure \(\PageIndex ...
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Radioisotopes are radioactive isotopes of an element. Atoms that contain an unstable combination of neutrons and protons, or excess energy in their nucleus.
Nov 21, 2023 · Radioactive isotopes have an unstable nucleus that decays or emits excess energy or radiation until the nucleus becomes stable. They can be naturally occurring or...
Mar 22, 2021 · Radioactive isotopes have a variety of applications. Generally, however, they are useful either because we can detect their radioactivity or we can use the energy they release. Radioactive isotopes are effective tracers because their radioactivity is easy to detect.
Jul 30, 2020 · Radioisotopes are the unstable form of an element that emit radiation to transform into a more stable form. Radiation is easily traceable and can cause changes in the substance it falls upon. These special attributes make radioisotopes useful in medicine, industry and other areas.
Jan 10, 2023 · decay: (for radioactive materials) The process whereby a radioactive isotope — which means a physically unstable form of some element — sheds energy and subatomic particles. In time, this shedding will transform the unstable element into a slightly different but stable element.
Aug 16, 2024 · radioactive isotope. gamma decay. radioactivity, property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously. It is, in essence, an attribute of individual atomic nuclei.
