Types of Radioactivity

Radioactivity is defined as the property possessed by some elements with spontaneously emitting alpha particles (a), beta particles (ยก3), or sometimes gamma rays (y) by the disintegration of the nuclei of atoms. It is a naturally occurring phenomenon, it can not be stopped, and it has been taking place since the beginning of time. The process of unstable nuclei giving off energy to reach a stable condition is called radioactive decay. This process produces nuclear radiation, and the emitting isotopes are called ra-dionuclides (radio isotopes). All isotopes of elements with atomic numbers larger than 83 (Bismuth) are radioactive. A few elements with lower atomic numbers, such as potassium and rubidium, have naturally occurring isotopes that are also radioactive. The kind of ionizing radiation emitted, the amount of energy, and the period of time it takes to become stable differs for each radioactive isotope. The following three types of radiation can be emitted.

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