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Why is that in Thompsons model of atom the mass of atom is due to electrons only.​

User PEHLAJ
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Answer:According to the postulates of Thomson's atomic model, an atom resembles a sphere of 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.

Step-by-step explanation:

User Grassyburrito
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Answer:

An atom as a whole is electrically neutral because the negative and positive charges are equal in magnitude

User Thomas Parslow
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