The atomic number of an atom is equal to the number of
A)neutrons.
B)electrons plus protons.
C)neutrons plus protons.
D)protons.
E)nuclei.

Name: The atomic number of an atom is equal to the number of A)neutrons. B)electrons plus protons. C)neutrons plus protons. D)protons. E)nuclei.
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Question

Quizplus · Accepted Answer

The atomic number of an atom is defined as the number of protons in the nucleus of the atom. Therefore, the correct choice is D, which is protons.

The Atomic Number of an Atom Is Equal to the Number