In β-emission from a radioactive substance, an electron is ejected. This electron comes from ______.

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KollegeApply · Accepted Answer

In β-emission from a radioactive substance, an electron is ejected. This electron comes from the nucleus of an atom. Explanation: Radioactivity is a nuclear phenomenon. Hence, electrons come out of the nucleus. An electron is created as a result of the decay of one neutron into a proton inside the nucleus, and it is not possible for the electron to stay inside the nucleus; thus, it is spontaneously emitted.

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