Answer :
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To determine the number of protons in an oxygen atom, we need to remember that the atomic number of oxygen is 8. This means that an oxygen atom has 8 protons.
In the question, it mentions that there are 7,99 neutrons in the atom. However, the number of neutrons doesn't directly affect the number of protons in the atom. Neutrons and protons contribute to the atomic mass, but the atomic number (which is 8 for oxygen) specifically refers to the number of protons.
Therefore, the correct answer is: 8 protons.
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