SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An atom has 29 protons, 29 electrons, and 35 neutrons. What is the mass number of the atom?
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29
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35
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64
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93
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Explanation:
Detailed explanation-1: -Therefore, the atomic number of element is 29 and mass number is 64.
Detailed explanation-2: -Copper has an atomic number of 29 and a mass number of 64.
Detailed explanation-3: -The atomic weight of copper is 64; it has 29 protons and 35 neutrons.
Detailed explanation-4: -All copper atoms have atomic number 29: all their nuclei contain 29 protons. But they also contain uncharged particles called neutrons. In natural copper, the atoms are of two kinds. One has 29 protons and 34 neutrons in the nucleus; the other has 29 protons and 36 neutrons (Figure 4).
Detailed explanation-5: -It means that there will be also 29 electrons (the same number as the number of protons) in the copper atom.
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