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← ScienceWhich outcome results when exceeding iron's nuclide number in stellar nucleosynthesis?
A)Star collapses, forming a singularity✓
B)Increased energy yield via fission
C)Alpha decay events become dominant
D)Stable isotopes are created readily
💡 Explanation
A nuclear fusion beyond iron consumes energy because of the increasing proton number; the endothermic fusion mechanism steals energy from the process. Therefore collapse occurs, rather than radiating excess, because iron has the highest nuclear binding energy per nucleon.
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