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← ScienceWhich outcome results when thermal neutrons bombard uranium-235?
A)Nuclear fission chain propagating reaction✓
B)Isotopic enrichment rate accelerates rapidly
C)Radioactive decay shifts via alpha emission
D)Binding energy releases creating heavier isotopes
💡 Explanation
The uranium-235 nucleus undergoes nuclear fission causing a chain reaction, because neutron absorption induces instability. This releases energy and more neutrons. Radioactive decay isn't directly triggered, therefore fission occurs rather than simply shifting isotopic composition via alpha/beta emissions.
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