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The atomic number of oxygen is 8, because oxygen has A. electrons in eight shells. B. eight protons in the nucleus. C. a second shell with eight electrons. D. an atomic mass of 8.
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The atomic number of oxygen is 8, because oxygen has

A. electrons in eight shells.
B. eight protons in the nucleus.
C. a second shell with eight electrons.
D. an atomic mass of 8.

User Michael Gisbers
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Answer:

eight protons in the nucleus.

Step-by-step explanation:

User GarfieldKlon
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The atomic number of oxygen is 8, because oxygen has eight protons in the nucleus.
User Scott Dillman
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