Uranium has the chemical symbol $\text{U}$. The equation shows the radioactive decay of uranium-235. $^{235}_{92}\text{U} \rightarrow ^{x}_{y}\text{Th} + ^{4}_{2}\text{He}$ What are the values of $x$ and $y$?
Physics 0625 · IGCSE · Radioactivity
Uranium has the chemical symbol $\text{U}$. The equation shows the radioactive decay of uranium-235. $^{235}_{92}\text{U} \rightarrow ^{x}_{y}\text{Th} + ^{4}_{2}\text{He}$ What are the values of $x$ and $y$?