In the reaction 23492Th → 23493Y + 0-1e, the electron emits from the
Correct answer: B. Nucleus
- A. 1st orbit
- B. Nucleus
- C. 2nd orbit
- D. Valence Shell
Explanation
Option B is correct because the electron (e^-) is emitted from the parent nucleus 234Th92 during the process of radioactive decay. This type of decay is known as beta-minus decay or β- decay. In beta-minus decay, a neutron in the nucleus is transformed into a proton, and an electron and an antineutrino are emitted.
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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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