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The atomic mass of an element is A. the sum of the protons and neutrons in one atom of the element. B. twice the number of protons in one atom of the element. C. a weighted average of the masses of an element’s isotopes. D. a ratio based on the mass of a carbon-12 atom.

Verified Answer :

andreatheshorty

A. the sum of the protons and neutrons in one atom of the element

After a bit of research i found out that Atomic mass units, or amu, are also used to measure atomic masses, and they are equal to Daltons. The atomic mass of an atom will change depending on its amount of protons and neutrons, and will be different for each individual element.