Which of the following elements has an atomic number of 8?
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A.
Hydrogen
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B.
Nitrogen
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C.
Oxygen
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D.
Carbon
Correct Answer:
C. Oxygen
Explanation:
Oxygen is the element with an atomic number of 8, meaning its nucleus contains exactly eight protons. This atomic number is unique to oxygen and determines its position and chemical properties in the periodic table, distinguishing it from hydrogen (1), carbon (6), and nitrogen (7).
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