Rutherford’s Model of atom : This model was based upon the results of the famous alpha-rays scattering experiment. It is also known as ‘Planetary model’ and can be summarised in following points.
(i) Most of the mass and all the positive charge of an atom are present in a very small region called the nucleus.
(ii) The magnitude of the charge on the nucleus is different in atoms of different elements.
(iii) Electrons revolve in the space around nucleus in different circular orbits and the number of electrons is equal to the number of units of positive charge in the nucleus.
