NCERT Exemplar Solutions Class 9 Science Solutions for Structure of the Atom - Exercise in Chapter 4 - Structure of the Atom

Question 43 Structure of the Atom - Exercise

In what way is Rutherford’s atomic model different from that of Thomson’s atomic model?


Rutherford proposed that electron revolves around the nucleus in well-differentiated orbits. The nucleus is the center that is positively charged. Rutherford proposed that the nucleus is very small and nearly all the mass of an atom is centered in the nucleus.


Thompson proposed that electron are scattered positively charged spheres like a Christmas pudding and the mass of the atom was supposed to be uniformly distributed.

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