During a negative β-decay
Correct answer: C. A neutron in the nucleus decays emitting an electron
- A. An atomic electron is ejected
- B. An electron which already present with in the nucleus is ejected
- C. A neutron in the nucleus decays emitting an electron
- D. A part of binding energy of nuclei is converted into electron
Explanation
When ratio of neutrons to protons is more than one, then neutrons convert into protons by emitting an electron. Electrons donot come out from nucleus as nucleus contains no electrons, therefore, neutrons in the nucleus decay converting into electron and emitting electron.
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About Radioactive Decay
Radioactive decay is the spontaneous transformation of unstable nuclei, described by decay constant, activity, half life and the exponential decay law. Work includes alpha, beta and gamma emissions, decay equations and remaining nuclei, with half life distinguished from the time required for complete decay.
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