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  1. D

    determind the oxidation number of the underlined element in each of the following:?

    O2 = oxidation # is -2 CIO3-= -2 x 3= -6, but since it has a negative 1 charge the oxidation # for chlorine is +5. Because -6+5=-1 Na2S2O3= oxidation # is +4 Silver is +1 Carbon is +4 maganese is +2 manganese is +7 Zinc im unsure Sulphur is +5
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