So our oxidation is as follows. A diatomic hydrogen is oxidized and it releases two H plus ions and two electrons. Our reduction reaction is as follows. A diatomic oxygen molecule takes up those two electrons and also takes up the two H plus ions forming water in a liquid state. Now, our neck reduction reaction is found by simply adding up these guys. We see that the H two plus ions cancel, the electrons cancel, and we have the following redox reaction.