"Mass of an atom is concentrated in the centre of the atom (nucleus)." justify the statement by giving suitable explanation.
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All the mass of an atom is concentrated in the nucleus because atom contains three subatomic particles like electron, proton and neutron. ... So, charge on negatively charged electrons are balanced by charge on positively charged proton. Therefore, atom is electrically neutral and stable.
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Mass of an atom is contributed by proton and neutron. An electron has a negligible mass which does not contribute much for the mass of an atom. As protons and neutron lie inside the nucleus mass of an atom is major present in the nucleus.
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