Calculate the number of electron, proton and neutron of Cu?
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Copper has an atomic number of 29, so it contains 29 protons and 29 electrons. The atomic weight (sometimes called atomic mass) of an atom is approximated by the sum of the number of protons and the number of neutrons in the nucleus of the atom.
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Answer:
cu is copper =29
electrons=protons =29
neutrons =35 because the atomic weight of copper is 64
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