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← ScienceWhich risk significantly rises following selective volatilization of uranium isotopes?
A)Reduced neutron absorption cross-section
B)Increased prevalence of delayed neutrons
C)Elevated sustained fission chain reaction✓
D)Diminished isotope separation endpoint ratio
💡 Explanation
Uranium enrichment concentrates U-235, increasing fissile material, hence enhancing the chance of a sustained chain reaction because the *neutron multiplication factor* rises. Therefore, exceeding criticality is likelier, rather than lower reaction rates from reduced neutron absorption.
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