The oxygen would receive electrons.
It is possible to know if an atom would receive or donate electrons through its valence layer. This because:
- The valence layer shows how many electrons each atom has in the last layer of the electronic distribution.
- An atom must have eight electrons in that layer to become stable.
- If an atom has less than eight electrons in the valence layer it must receive electrons to become stable.
- If the atom has more than eight electrons in the valence layer, it will need to donate electrons to become stable.
Oxygen has six electrons in the valence layer, which allows us to conclude that it needs to receive two electrons to become stable and not donate any electrons.
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