A) \[_{54}X{{e}^{143}}+3{{\ }_{0}}{{n}^{1}}\]
B) \[_{54}X{{e}^{145}}\]
C) \[_{57}X{{e}^{142}}\]
D) \[_{54}X{{e}^{142}}{{+}_{0}}{{n}^{{}}}\]
Correct Answer: A
Solution :
\[_{92}{{U}^{235}}{{+}_{0}}{{n}^{1}}{{\to }_{38}}S{{r}^{90}}{{+}_{54}}X{{e}^{143}}+{{3}_{0}}{{n}^{1}}\]
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