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    Why is the oxidation state of Oxygen in hydroxide -2?

    Doesn't hydrogen only have one electron?

    thanks
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     H^{+} + OH^{-} ----> H_2O
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    Because the overall charge of an OH ion is -1, so the oxidation states have to add up to make that number. Hydrogen is +1, so oxygen has to be -2
 
 
 
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Updated: September 24, 2010
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