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← ScienceWhich outcome occurs when stellar nucleosynthesis exhausts lighter elements forming iron?
A)Fusion stops, core collapses rapidly✓
B)Increased neutron capture rate
C)Increased alpha decay events
D)Stable equilibrium is indefinitely maintained
💡 Explanation
Fusion consumes lighter elements until iron-56 which exhibits the greatest nuclear binding energy per nucleon: therefore, further fusion demands energy input rather than releases it, because core collapse ensues leading to a supernova, rather than stability.
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