NEUTRONS
\njˈuːtɹɒnz], \njˈuːtɹɒnz], \n_j_ˈuː_t_ɹ_ɒ_n_z]\
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Electrically neutral elementary particles found in all atomic nuclei except light hydrogen; the mass is equal to that of the proton and electron combined and they are unstable when isolated from the nucleus, undergoing beta decay. Slow, thermal, epithermal, and fast neutrons refer to the energy levels with which the neutrons are ejected from heavier nuclei during their decay.
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