The relative atomic mass of an element is
A. the mass of its atoms compared to the mass of a carbon-12 atom.
B. the mass of its isotopes compared to the mass of a normal atom.
C. the mass of its atoms averaged over time. D, the mass of only the neutrons in the atom's nucleus.
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The relative atomic mass of an element is
A. the mass of its atoms compared to the mass of a carbon...
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