Question

What is the oxidation number of sulphur in s2o8^_2

Answer 1

in s2o82- ,there is a peroxy bond and while counting or calculating oxidation no. of sulphur, we take oxidation state of those oxygen atoms to be (-1) and so two 0 atoms with (-2) charge are going to (-1) oxidation state .so chane in state o.s. is in oxygen atoms not in the sulphur atoms .

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