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An iodate is a conjugate base of iodic acid.〔(Merriam-Webster definition )〕 In the iodate anion, iodine is bonded to three oxygen atoms and the molecular formula is IO3−. The molecular geometry of iodate is trigonal pyramidal. Iodate can be obtained by reducing periodate with a thioether. The byproduct of the reaction is a sulfoxide. Iodates are a class of chemical compounds containing this group. Examples are sodium iodate (NaIO3), silver iodate (AgIO3), and calcium iodate (Ca(IO3)2). iodates resemble chlorates with iodine instead of chlorine. In acid conditions, iodic acid is formed. Potassium hydrogen iodate (KH(IO3)2) is a double salt of potassium iodate and iodic acid and an acid as well. Iodates are used in the iodine clock reaction. Potassium iodate, like potassium iodide, has been issued as a prophylaxis against radioiodine absorption in some countries.〔http://www.rpii.ie/Site/Media/Press-Releases/Radioactivity-released-from-Wylfa-nuclear-power-pl.aspx〕〔http://www.dohc.ie/press/releases/2008/20080403c.html〕 ==Other oxyanions== Iodine can assume oxidation states of −1, +1, +3, +5, or +7. A number of neutral iodine oxides are also known. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Iodate」の詳細全文を読む スポンサード リンク
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