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← ScienceWhich outcome results when stellar core iron fusion plateaus?
A)Core collapse ensues rapidly✓
B)Helium flash initiates vigorously
C)Carbon fusion begins immediately
D)Neutron capture synthesis accelerates
💡 Explanation
Core collapse initiates because overcoming iron's high nuclear binding energy via fusion absorbs, rather than releasing energy. This rapid energy loss causes gravitational pressure to overwhelm thermal; therefore, the star implodes, rather than fusing heavier elements.
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