The mass number of an atom is equal to the sum of the ____.
A) neutrons and isotopes
B) neutrons and electrons
C) neutrons and protons
D) protons and electrons
E) ions and isotopes

Name: The mass number of an atom is equal to the sum of the ____. A) neutrons and isotopes B) neutrons and electrons C) neutrons and protons D) protons and electrons E) ions and isotopes
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Question

Quizplus · Accepted Answer

The mass number of an atom is equal to the sum of its neutrons and protons, which are found in the nucleus.

The Mass Number of an Atom Is Equal to the Sum