The amount of energy required to separate the nucleons from a nucleus is called:

Consider an $\alpha$-particle just in contact with a $_{92}U^{238}$ nucleus. Calculate the coulombic repulsion energy (i.e.,the height of the coulombic barrier between $U^{238}$ and $\alpha$-particle) assuming that the distance between them is equal to the sum of their radii.

The binding energy of $_8O^{16}$ is $127 \ MeV$. Its binding energy per nucleon is ...... $MeV$.

If the mass defect of ${ }_{5}^{11}B$ is $0.081 \ u$,its average binding energy (in $MeV$) is

In a fission reaction,the nucleus of an element:

The huge amount of energy which is released during atomic fission is due to