Tritium,a radioactive isotope of hydrogen,emits which of the following particles?

The number of $\alpha$ and $\beta$-particles emitted in the nuclear reaction $_{92}U^{238} \to _{90}Th^{234} \to _{91}Pa^{234}$ are respectively:

In the radioactive decay $_{92}X^{232} \to _{89}Y^{220}$,how many $\alpha$ and $\beta$-particles are ejected from $X$ to form $Y$?

If $_{92}U^{236}$ nucleus emits one $\alpha$-particle,the remaining nucleus will have

Consider the radioactive disintegration ${}_{82}A^{210}$ $\rightarrow B$ $\rightarrow C$ $\rightarrow {}_{82}D^{206}$. The sequence of emission can be

The number of $\alpha$ and $\beta$-particles emitted in the nuclear reaction $_{90}^{228}Th \to _{83}^{212}Bi$ are respectively: