The atomic number of an atom equals the number of what?

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Multiple Choice

The atomic number of an atom equals the number of what?

Explanation:
Protons. The atomic number is the number of protons in the nucleus, and that count uniquely identifies the element. Neutrons change the isotope but not the element, and electrons relate to charge rather than the atomic number.

Protons. The atomic number is the number of protons in the nucleus, and that count uniquely identifies the element. Neutrons change the isotope but not the element, and electrons relate to charge rather than the atomic number.

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