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stuck on a redox reaction question... :/ Watch

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    Lithium Oxide forms when lithium is burned in air. Combustion is a redoc reaction. the equation is 4Li+O2---> 2Li2O

    I can do part a, and part b but i cant do part c

    part c is "State which reactant in this reaction is reduced. Write a half equation".

    I know what reduction is and I know what a half equation is however I am somehow stuck on this like I cant figure it out
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    got it now I was meant to calculate the oxidation states and then that would have lead me to realise which has been reduced
 
 
 
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