We can write similar decay equations involving beta particles:
Note that it has no effective mass (compared to neutrons and protons) and has negative charge (compared to protons). e.g.
X, in this case, is Np (Neptunium). Before, the Uranium-238 had 92 protons and (238-92) 146 neutrons. After, the daughter nucleus, Neptunium-238, has (238-93) 145 neutrons and 93 protons!
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