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Oxidation and Reduction View solution … 176483円 16インチ HOT タイヤ、ホイール 205/55R16 205/55R16 P-03 ジークス ホットスタッフ ファルケン サマータイヤ ジースピード ジースピード 夏タイヤ、ホイールセット STUFF 16インチ … Fluorine has Only -1 Oxidation State: Fluorine is the most electronegative element having highest electronegativity 4. Halogens - chemrevise Year 12 - A-Level Chemistry Some uses are being phased out for environmental reasons, but new uses continue to be found. All four compounds react with concentrated sulphuric acid but only two can reduce it. So I think the question changes to why are the elements down the group more able to form oxygen compounds with decreasing oxidation state of oxygen, and that is due to the size of the metal atoms; the larger the metal atom, the higher number of oxygen atom containing species it can (stably) accommodate around it. Books. Since this is not a superoxide or a peroxide, or any other case where the oxidation state of oxygen is not −2 according to this, so the oxidation state of oxygen should be −2. Halogen displacement reactions 1 Answer. Oxidation State of Group 17 Elements