Give reason nucleus of an atom is heavy and positively charged
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This is because it consists of both protons and neutrons . so its heavy . also protons are positively charged and neutrons donot have any charge. So the nucleus is charged because of the positive charge of the protons.
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Answer:
Nucleus is positively charged due to presence of protons. It is heavy because whole mass of atom is concentrated in nucleus due to protons and neutrons.
Explanation:
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