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← ScienceWhich consequence results when alpha decay occurs in americium-241?
A)Neutron number increases by two
B)Atomic mass decreases by four✓
C)Binding energy per nucleon rises
D)Nuclear fission becomes self-sustaining
💡 Explanation
Alpha decay emits an alpha particle (helium nucleus); americium-241’s mass number decreases by four due to loss of two protons and two neutrons. Therefore atomic mass decreases, rather than increasing neutron number, because fission is separate.
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