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If the mass number of an atom is 23 and the number of neutrons in the nucleus of an atom is 12, then the atomic number is: 12 23 11 35
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If the mass number of an atom is 23 and the number of neutrons in the nucleus of an atom is 12, then the atomic number is:

12
23
11
35

User Alynurly
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11 hope it helps you
User Raphael Laurent
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