The preparation of phenylmagnesium bromide from bromobenzene and magnesium metal

Question

The preparation of phenylmagnesium bromide from bromobenzene  and magnesium metal is an example of an oxidation reduction reaction. Which species is  oxidized and what is reduced?

Explanation / Answer

Hi, i didn't see the posted answer, so i didn't know that itbecame a blank answer... [here is the answer] The reaction that is going to takes place is : PhBr + Mg----> PhMgBr Now in PhBr, oxidation state of Ph group is +1 where as in PhMgBr(which dissociates like Ph- , MgBr+) Ph has -1 oxidation state (Ph means Phenyl group) => Ph group has been reduced and regarding Mg it's oxidation state changes from 0 to +2 =>increase in oxidation state => oxidation so Phenyl group is Reduced and Mg isOxidized

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