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Published on: August 14, 2026
captures a K-electron into its nucleus. What will be the sum of mass number and atomic number of the nuclide formed?
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When a nucleus captures a K-electron, a proton is converted to a neutron. So the mass number does not change but the atomic number reduces by 1 unit. Thus the mass number and atomic number of the resulting nuclide will be 7 and 3 respectively.
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