The first controlled artificial disintegration of an atomic nucleus was achieved by

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

An element $_{96}X^{227}$ emits $4\alpha$ and $5\beta$ particles to form a new element $Y$. The atomic number and mass number of $Y$ are:

Which is least effective for artificial transmutation?

$_6C^{12}$ and $_1T^3$ are formed in nature due to the nuclear reaction of a neutron with:

Radioactive iodine is used to diagnose the disease of