Which element is the end product of each natural radioactive series?

Emission is caused by the transformation of one neutron into a proton. This results in the formation of a new element having

In a nuclide,one $a.m.u.$ of mass is dissipated into energy to bind its nucleons. The energy equivalent of this mass is

In a radioactive decay,an emitted electron comes from

The isotopic mass of ${}_{3}^{7}Li$ is $7.016005 \ u$ and those of the $H$ atom and neutron are respectively $1.007825 \ u$ and $1.008665 \ u$. Then,the binding energy of the ${}_{3}^{7}Li$ nucleus is: (in $MeV$)

If radium and chlorine combine to form radium chloride,the compound is: