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← ScienceWhich outcome occurs when a uranium enrichment facility prioritizes lighter isotopes?
A)Faster reactor start-up speed✓
B)Decreased neutron cross-section
C)Radioactive waste volume increases
D)Chain reaction sustainability decreases
💡 Explanation
A higher proportion of U-235 undergoes nuclear fission, because neutron absorption and subsequent fission are more probable with lighter isotopes—therefore reaction starts quicker, rather than less sustainable chain reactions which require heavier isotopes or increased waste volume as this remains consistent.
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