Acertain 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
Answers: 1
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Acertain atom of oxygen contains 8 protons, 8 neutrons, and 8 electrons. another atom of unknown ide...
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