I need to question that what does radio isotopes emits?Alpha,Beta,Gamma or all particles?
Radioactive isotopes emit a variety of particles alpha (he4 nucleus), beta- (electron), beta+ (positron), protons, neutrons, usually accompaned by gamma rays (photons).
In addition when fissionable nuclei split you can get a many different things.
All beta decay radioisotopes also emit neutrinos.
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