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← ScienceWhich consequence results when protactinium-234 undergoes beta minus decay?
A)Neutrino emission; atomic number reduction
B)Increased atomic mass; positron emission
C)Electron emission; negligible mass change✓
D)Alpha emission; increased neutron number
💡 Explanation
Beta minus decay causes a neutron to convert to a proton and electron; therefore, an electron is emitted and the atomic number increases via the beta decay mechanism while the mass number is nearly unchanged, rather than emitting other particles.
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