What is the mass number of an atom that contains 23 protons,23 electrons,and 28 neutrons?
A)5
B)28
C)51
D)74

Name: What is the mass number of an atom that contains 23 protons,23 electrons,and 28 neutrons? A)5 B)28 C)51 D)74
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Question

Quizplus · Accepted Answer

The mass number of an atom is equal to the total number of protons and neutrons in the nucleus. In this case, the atom has 23 protons and 28 neutrons, giving a mass number of 23 + 28 = 51. Therefore, the correct answer is C.

What Is the Mass Number of an Atom That Contains