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Give scientific reason:All the mass of an atom is concentrated in the nucleus. |
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Answer» 1. The nucleus of an atom contains protons and neutrons. 2. The electrons revolve around the nucleus. 3. The mass of an electron is negligible compared to that of a proton or a neutron. 4. Hence, the mass of an atom depends mainly on the number of protons and neutrons. Therefore, practically all the mass of an atom is concentrated in the nucleus. |
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