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12 April, 00:11

The sum of the protons and neutrons in an atom equals the

a. atomic number.

b. number of electrons.

c. atomic mass.

d. mass number.

+2
Answers (2)
  1. 12 April, 00:14
    0
    The right answer is D, mass number. It is commonly mistaken with atomic number.
  2. 12 April, 00:30
    0
    The sum of Protons and Neutrons in an atom equals:

    d. mass number.
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