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(N/A) Thomson's modelRutherford's modelBohr's modelAn atom consists of a positively charged sphere and the electrons are embedded in it.An atom consis

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(N/A) Thomson's modelRutherford's modelBohr's modelAn atom consists of a positively charged sphere and the electrons are embedded in it.An atom consists of a positively charged center called the nucleus. The mass of the atom is contributed mainly by the nucleus.Bohr agreed with almost all points as said by Rutherford except regarding the revolution of electrons,for which he added that there are only certain orbits known as discrete orbits inside the atom in which electrons revolve around the nucleus.The negative and positive charges are equal in magnitude. As a result,the atom is electrically neutral.The size of the nucleus is very small as compared to the size of the atom.While revolving in its discrete orbits,the electrons do not radiate energy.

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

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Thomson's model	Rutherford's model	Bohr's model
An atom consists of a positively charged sphere and the electrons are embedded in it.	An atom consists of a positively charged center called the nucleus. The mass of the atom is contributed mainly by the nucleus.	Bohr agreed with almost all points as said by Rutherford except regarding the revolution of electrons,for which he added that there are only certain orbits known as discrete orbits inside the atom in which electrons revolve around the nucleus.
The negative and positive charges are equal in magnitude. As a result,the atom is electrically neutral.	The size of the nucleus is very small as compared to the size of the atom.	While revolving in its discrete orbits,the electrons do not radiate energy.