\( \begin{array}{l}{ }_{92}^{235} U \rightarrow{ }_{82}^{207} \mathrm{~Pb}+{ }_{2}^{4} H e^{2+}+...
\( \begin{array}{l}{ }_{92}^{235} U \rightarrow{ }_{82}^{207} \mathrm{~Pb}+{ }_{2}^{4} H e^{2+}+{ }_{-1}^{0} e \\ \text { x: No. of } \alpha \text {-particles } \\ \text { y: No. of } \beta \text {-particles } \\ \text { Calculate } x / y\end{array} \)
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