Nuclear Radius And Density

The nucleus is a very small part of a whole atom.  By probing atoms using scattering and diffraction methods, we know that the diameter of an atom is about 0.1 nanometres and the diameter of the smallest nucleus is about 2 femtometres.  So basically nuclei are really, really tiny compared to the rest of the atom.  Molecules are just a number of atoms joined together.  As a rough guide, the size of a molecule equals the number of atoms in it multiplied by the size of one atom.  The nucleus is made up of…