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Which outcome results when a very heavy unstable nucleus undergoes beta-minus decay?

A)Increased nuclear binding energy per nucleon
B)Total nuclear mass remains constant
C)Number of protons decreases significantly
D)Decreased rate of nuclear fission

💡 Explanation

Beta-minus decay converts a neutron to a proton, capturing an electron via the weak interaction. This process, nucleon rearrangement, forms a more stable nucleus with higher binding energy per nucleon. Therefore, binding energy increases, rather than other characteristics changing significantly.

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