When $_3Li^7$ are bombarded with protons,$\gamma$-rays are produced. The nuclide formed is

Radioactive iodine is used to diagnose the disease of

The number of $\alpha$ and $\beta$-particles emitted during the transformation of $_{90}Th^{232}$ to $_{82}Pb^{208}$ are respectively

In the nuclear reaction $_4^9Be(p, \alpha)X$,the $X$ is

The isotope $_{92}U^{235}$ decays in a number of steps to an isotope of lead $_{82}Pb^{207}$. The groups of particles emitted in this process will be

$_{98}Cf^{246}$ was formed along with a neutron when an unknown radioactive substance was bombarded with $_{6}C^{12}$. The unknown substance was: