The number of ______ is equal to the difference between the mass number of the atom and the atomic number.
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A.
Both protons and electrons
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B.
Neutrons
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C.
Electrons
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D.
Protons
Correct Answer:
B. Neutrons
Explanation:
The number of neutrons in an atom can be determined by subtracting the atomic number (the number of protons) from the mass number (the sum of protons and neutrons). This calculation effectively removes the proton count from the total nuclear mass, leaving only the count of neutrons. Therefore, the missing word is "neutrons."
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