The mass number represents the number of
A)protons in an atom.
B)electrons in an ion.
C)neutrons in an atom.
D)protons + neutrons.
E)neutrons + electrons.

Name: The mass number represents the number of A)protons in an atom. B)electrons in an ion. C)neutrons in an atom. D)protons + neutrons. E)neutrons + electrons.
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Question

Quizplus · Accepted Answer

The mass number represents the total number of protons and neutrons in an atom. Therefore, option D (protons + neutrons) is the correct answer.

The Mass Number Represents the Number of