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← ScienceWhich outcome occurs when stellar core iron accumulates?
A)Neutron degeneracy overcomes binding energy✓
B)Increased hydrogen fusion to helium
C)Continuous synthesis carbon to oxygen
D)Gravitational attraction halts nuclear reactions
💡 Explanation
Core collapse to a supernova happens because iron fusion requires energy input rather than releasing energy; therefore, core support ceases once gravity overwhelms the binding energy facilitated by neutron degeneracy pressure rather than hydrogen fusion accelerating.
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