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Is the reaction of 2-iodobutane turning into but-2-ene reduction or oxidation reaction?

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HI is being removed in the reaction. It is $\beta$-elimination. I really am not able to see any changes in the oxidation numbers also.

$\ce{CH3-CH(I)-CH2-CH3}$ will undergo dehydrohalogenation.

Only rearrangement in molecular structure takes place.

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  • $\begingroup$ Why was my answer unaccepted? Like it was accepted long ago and now all of a sudden its unaccepted $\endgroup$ Nov 24, 2023 at 1:57
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    $\begingroup$ I guess only OP knows why. Well, a reason could be that technically ox states do change, even if sum stays the same. BTW did you check out the site chat? For example this room or the main chatroom $\endgroup$
    – Mithoron
    Nov 26, 2023 at 0:08

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