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← ScienceWhich outcome decreases iron-56 stability with nucleon addition?
A)Reduced average nuclear binding energy✓
B)Increased neutron capture cross-section
C)Enhanced alpha decay probability
D)Spontaneous symmetric nuclear fission
💡 Explanation
Adding nucleons reduces stability because the average nuclear binding energy per nucleon decreases; therefore, iron-56 seeks maximize stability rather than spontaneously fission or undergo specific decays at a higher probability under stable conditions.
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