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← ScienceWhich outcome results when iron-56 gains excess excitation energy?
A)Neutron emission becomes energetically favorable✓
B)Beta decay probability decreases sharply
C)Alpha particle binding energy strengthens
D)Spontaneous fission cross-section declines
💡 Explanation
Excess excitation energy surpasses the neutron separation energy; therefore neutron emission occurs via photodisintegration because the increase in binding overcomes the strong force, rather than decay via beta, alpha, or fission.
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