Thomson’s model did not have smaller particles ,therefore option (d) is correct.
The description of Thomson’s atomic model is one of the many scientific models of the atom. It was proposed by J.J Thomson in the year 1904 just after the discovery of electrons.
According to the postulates of Thomson’s atomic model, an atom is surrounded by positive charge with electrons (negatively charged particles) present inside the sphere.
The positive and negative charge is equal in magnitude and therefore an atom has no charge as a whole and is electrically neutral.
Thomson’s model did not have smaller particles ,hence option (d) is correct.
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