Compare all the proposed models of an atom given in this chapter

Answer :

THOMSON'S Model of An Atom	RUTHERFORD'S Model of An Atom	BOHR' S Model of An Atom
(i) An atom consists of a positively charged sphere and the electrons are embedded in it. (ii) The negative and positive charges are equal in magnitude. So, the atom as a  whole is electrically neutral.	(i) There is a positively charged centre in an atom called the nucleus. Nearly all the mass of an   atom resides in the nucleus. (ii) The electrons revolve around the nucleus in well-defined orbits. (iii) The size of the nucleus is very small as compared to the size of the atom.	(i) Only certain special orbits known as discrete orbits of electrons, are allowed inside the atom. (ii) While revolving in discrete orbits the electrons do not radiate energy.

This is an answered question from Chapter 4. Structure Of The Atom of CBSE Class 9th Science

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