User: The atomic mass of an element depends upon the _____. A) mass of each electron in that element B) mass of each isotope of that element C) relative abundance of protons in that element D) mass and relative abundance of each isotope of that element

Note: The nucleus contains: protons and neutrons. i hope this is helpful. :) [http://answers.yahoo.com/question/index?qid=1006051128747]
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Weegy: The atomic mass of an element depends upon the D) mass and relative abundance of each isotope of that element.
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