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The nucleus is the central part of every atom and consists of protons and neutrons. The nucleus is where most of the mass of the atom is concentrated.
Anne Evans
The nucleus of an atom contains protons (which are positively charged) and neutrons (which have no charge), so the nucleus is positively charged.
The nucleus is located in the centre of the atom and represents almost the whole mass of the atom.
Anne Evans
The nucleus is the structure at the centre of an atom, consisting of protons and neutrons packed closely together, around which the electrons move.
Penny Rollo, England
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