What does the atomic mass of an element represent? a) the total number of its protons and electrons. b) the average total mass of its neutrons, protons, and electrons. c) the total mass of its neutrons. d) the average total mass of its electrons.

Answer;

B) The average total mass of its neutrons, protons, and electrons

Explanation;

-The atomic mass is approximately equivalent to the number of protons and neutrons in the atom.

-The mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.

21 stacks

step-by-step explanation:

divide 630/30

21 stacks

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instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully