Radioactive decay

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Alpha decay is ane insaumple type o radioactive decay, in whilk an atomic nucleus ootpits an alpha particle, an tharebi transforms (or 'decays') intae an atom wi a mass nummer decreased bi 4 an atomic nummer decreased bi 2. Mony ither teeps o decays is possible.

Radioactive decay, an aa kent as nuclear decay or radioactivity, is the process bi whilk a nucleus o an unstable atom loses virr bi ootpittin pairticles o ionizin radiation. A material that spontaneously ootpits this kin o radiation—whilk includes the emission o energetic alpha pairticles, beta pairticles, an gamma rays—is conseidered radioactive.