Question

What is meant by radioactivity.

Answer 1

Radioactivity decay is the process by which an unstable atomic nucleus loses energy by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron electron capture, gamma ray, or electron in the case of internal conversion. A material containing such unstable nuclei is considered radioactive. Certain highly excited short-lived nuclear states can decay through neutron emission, or more rarely, proton emission..

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Answer 2

Radioactivity is the emission of energy, in the form of elementary particles or electromagnetic waves, from an atom (electrons move from a higher to lower energy electron shell) or from the nucleus (a neutron or proton moves from a higher to lower energy shell).



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