Which formula do we use to determine the number of neutrons in an atom?

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Atomic number + Number of electrons

Mass number +Atomic number

Mass number -Atomic number

Mass number - number of protons

answer is B, D.

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Detailed Solution

Mass number represents the number of protons and neutrons in atoms. The number of neutrons in an atom can be calculated by subtracting the atomic number from the atomic mass or by subtracting the atomic number from the number of protons.

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