One Atomic Mass Unit Is Equal to One-Twelfth of the Mass

question 71

Multiple Choice

One atomic mass unit is equal to one-twelfth of the mass of an atom of _____.

• A) carbon with six protons and six neutrons
• B) hydrogen with one proton and one neutron
• C) oxygen with eight protons and eight neutrons
• D) sodium with 11 atoms and 12 neutrons
• E) magnesium with 12 atoms and 12 neutrons

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