Answer:
No, an oxygen atom cannot contain more than 8 protons.
Step-by-step explanation:
An oxygen atom is described as an atom with 8 protons found in the nucleus (atom weight of 16).
If hypothetically, an oxygen atom contained 9 protons, it would no longer be considered an "oxygen" atom. Once an oxygen atom has 9 protons it is considered a "fluorine" atom.