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For which of the following elements is the number of neutrons correctly represented, based on the atomic number and mass number given?
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For which of the following elements is the number of neutrons correctly represented, based on the atomic number and mass number given?

User Mimicocotopus
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A. iron: atomic number 26, mass 56, neutrons 30

User Quickbug
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Just subtract the neutrons from the mass number. that should give you your answer.
User Yamen Ashraf
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