The force between two protons is the same as the force between a proton and a neutron. The nature of the force is:

$A$ free neutron decays into a proton,but a free proton does not decay into a neutron. This is because

An atom ${}_3^8 X$ is bombarded by a shower of fundamental particles. In $10 \ s$,this atom absorbs $10$ electrons,$10$ protons,and $9$ neutrons. The percentage growth in the surface area of the nucleus is recorded as: (in $\%$)

How is the radius of the nucleus estimated? Write its relation to the radius and atomic mass number.

Two spherical nuclei have mass numbers $216$ and $64$ with their radii $R_1$ and $R_2$ respectively. The ratio,$\frac{R_1}{R_2}$ is equal to

Write the relation of the size of the nucleus to the atomic size.