Density of all the nuclei is same.
Radius of nucleus is directly proportional to the cube root of mass number.

The volume of a nucleus is directly proportional to

Rate of diffusion is directly proportional to the square root of molecular mass of substance.

Rate of diffusion is directly proportional to the square root of molecular mass of substance.

The volume of a nucleus is directly proportional to (where A = mass number of the nucleus)

Neutron scattering experiments have shown that the radius of the nucleus of an atom is directly proporitonal to the cube root of the number of nucleons in the nucleus. From _(3)^(7)Li to _(76)^(189)Os the radius is: