SSC
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: -The atomic weight of copper is 64; it has 29 protons and 35 neutrons.
Detailed explanation-3: -Copper has an atomic number of 29 and a mass number of 63. The atomic number is the number of protons in the nucleus, and the mass number is the number of protons and neutrons in the nucleus. This means that the copper atom has 29 protons and 34 neutrons in its nucleus (29 + 34 = 63).
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