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What does the atomic number of an element represent?
a. the number of electron shells in an atom of the element
b. the number of nuclei in an atom of the element
c. the number of neutrons in an atom of the element
d.the number of protons in an atom of the element

Respuesta :

D. The number of protons in an atom of the element

(The atomic number of a chemical element is the number of protons found in the nucleus of an atom)

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