Oxygen Atom
H2O___H2O___H2O___H2O___H2O___H2O___H2O___H2O___H2O___H2O___H2O___H2O___H2O_
Oxygen Atom is needed in a H2O molecule. The H2O molecule has one in it. Look at the picture below the big blue blob is the oxygen atom. The picture on the right shows a oxygen atom up close which is made up of 8 neutrons 8 protrons and 8 electrons.
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