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Chemistry, 19.11.2020 16:50 Quantajah

Mass number is O the average atomic mass of an element.
O the total number of electrons in an atom of an element.
O the total number of protons in an atom of an element.
O the total number of protons and neutrons in an atom of an element.

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Mass number is O the average atomic mass of an element.
O the total number of electrons in an...
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