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← ScienceWhich risk significantly increases when the average binding energy per nucleon decreases in stars?
A)Increased rate of thermonuclear runaway✓
B)Runaway production of C-12 isotopes
C)Reduced neutron flux in the core
D)Decreased emission of alpha particles
💡 Explanation
Reduced binding energy weakens nucleon bonds, increasing fusion sensitivity to temperature fluctuations. Therefore, thermonuclear runaway risk increases because of enhanced reaction rates via weakened nuclear binding, rather than stable fusion reactions under consistent heat release.
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