The phenomenon of radioactivity arises from the

${}_{90}Th^{232} \rightarrow {}_{82}Pb^{208}$. The number of $\alpha$ and $\beta$-particles emitted during the above reaction is:

By which law is the energy produced in a nuclear reaction given?

The nucleus $^{64}_{29}Cu$ accepts an orbital electron to yield:

$_{13}^{27}Al$ is a stable isotope. $_{13}^{29}Al$ is expected to disintegrate by

$_{92}U^{235} + n \to \text{fission product} + \text{neutron} + 3.20 \times 10^{-11} \ J$. The energy released when $1 \ g$ of $_{92}U^{235}$ undergoes fission is