\textbf{154-} The figure below shows the decay of nucleus 124. What is the name of the emitted particle?
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\textit{[Figure: parent nucleus $\binom{71}{53}$ decays to daughter nucleus $\binom{72}{52}$ + $\cdots$]}
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(1) Alpha
(2) Gamma
(3) Positron
(4) Electron
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