What does the mass number of an element represent?
its amount of protons and neutrons
its amount of electrons
its amount of protons
its amount of neutrons

The mass number tells us the number (the sum of nucleons) of protons and neutrons in the nucleus of an atom. The atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom. It is traditionally represented by the symbol z

Explanation:

its amount of protons and neutrons

Explanation:

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