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← ScienceWhich outcome occurs when increasing nucleon number surpasses iron's isotope stability?
A)Alpha decay rates greatly accelerate
B)Spontaneous fission pathways become favorable✓
C)Binding energy per nucleon greatly increases
D)Beta decay becomes energetically inhibited
💡 Explanation
Spontaneous fission becomes favorable because the strong nuclear force is unable able over overcome electrostatic repulsion. The binding energy per nucleon is lower, resulting in instability, therefore fission occurs rather than stability increasing or other forms of decay being affected.
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