| It was proposed by J.J. Thomson. | It was proposed by Ernst Rutherford. | It was proposed by Neil Bohr. |
| An atom consists of a positively charged sphere and the electrons are embedded in it. | There is a positively charged centre in an atom called the nucleus. Nearly all the mass of an atom resides in the nucleus. | Only certain special orbits known as discrete orbits of electrons are allowed inside the atom. |
| The negative and positive charges are equal in magnitude. So, the atom as a whole is electrically neutral. | There is very large empty space between nucleus and electrons. | While revolving in discrete orbits the electrons do not radiate energy. |
| It could not explain the result of Rutherford's ∝–particle scattering experiment. | It could not explain the stability of atom because revolving electron will lose energy and will ultimately fall into the nucleus. | This model has overcome the limitations of the Rutherford model by defining energy levels for electrons. |