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← ScienceWhich outcome results when uranium isotopes are separated?
A)Neutron moderation efficiency is increased
B)Radioactive decay rate accelerates rapidly
C)Critical mass required is changed✓
D)Chemical properties exhibit greater reactivity
💡 Explanation
Isotope separation enriches fissile uranium-235; Separation impacts the threshold for sustaining a fission chain reaction, as the neutron multiplication factor varies by composition because neutron absorption cross-sections change. Therefore, critical mass changes, rather than decay rates altering significantly in this separation scope.
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