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In an atom, protons have a mass of approximately 1 Atomic Mass unit (amu) and a positive charge (+1), located in the nucleus. Neutrons also have a mass of about 1 amu but carry no charge (0), and they are found alongside protons in the nucleus. Electrons have a much smaller mass (about 1/1836 amu) and a negative charge (-1), and they orbit the nucleus in electron shells. Together, these particles make up the fundamental structure of an atom.

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3mo ago

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