A certain atom of oxygen contains 8 protons, 8 neutrons, and 8 electrons. Another atom of unknown identity contains 9 protons. Which of the following MUST be true about this unidentified atom?
A. It is an isotope of oxygen
B. Its atomic mass is a decimal number
C. It has 9 neutrons in its nucleus
D. It cannot be an atom of oxygen
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Home » Biology » A certain atom of oxygen contains 8 protons, 8 neutrons, and 8 electrons. Another atom of unknown identity contains 9 protons. Which of the following MUST be true about this unidentified atom? A. It is an isotope of oxygen B.