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An iodide ion is the ion I −. [2] Compounds with iodine in formal oxidation state −1 are called iodides . In everyday life, iodide is most commonly encountered as a component of iodized salt , which many governments mandate.
This is an accepted version of this page This is the latest accepted revision, reviewed on 22 December 2024. This article is about the chemical element. For other uses, see Iodine (disambiguation). Chemical element with atomic number 53 (I) Iodine, 53 I Iodine Pronunciation / ˈ aɪ ə d aɪ n, - d ɪ n, - d iː n / (EYE -ə-dyne, -din, -deen) Appearance lustrous metallic gray solid ...
(Nonetheless, nitrogen triiodide is named as an iodide as it is analogous to the other nitrogen trihalides.) [7] Given the large size of the iodide anion and iodine's weak oxidising power, high oxidation states are difficult to achieve in binary iodides, the maximum known being in the pentaiodides of niobium, tantalum, and protactinium. Iodides ...
Tin(II) iodide, also known as stannous iodide, is an ionic tin salt of iodine with the formula SnI 2. It has a formula weight of 372.519 g/mol. It is a red to red-orange solid. Its melting point is 320 °C, and its boiling point is 714 °C. [1] Tin(II) iodide can be synthesised by heating metallic tin with iodine in 2 M hydrochloric acid. [2 ...
Triiodide is present in equilibrium with iodide anion and molecular iodine: I − 3 ⇌ I 2 + I −. Chlorate ion oxidizes iodide ion to hypoiodous acid and chlorous acid in the slow and rate-determining step: ClO − 3 + I − + 2 H + → HOI + HClO 2. Chlorate consumption is accelerated by reaction of hypoiodous acid to iodous acid and more ...
Hydrogen iodide (HI) is a diatomic molecule and hydrogen halide. Aqueous solutions of HI are known as hydroiodic acid or hydriodic acid, a strong acid.Hydrogen iodide and hydroiodic acid are, however, different in that the former is a gas under standard conditions, whereas the other is an aqueous solution of the gas.
The following exergonic equilibrium gives rise to the triiodide ion: . I 2 + I − ⇌ I − 3. In this reaction, iodide is viewed as a Lewis base, and the iodine is a Lewis acid.The process is analogous to the reaction of S 8 with sodium sulfide (which forms polysulfides) except that the higher polyiodides have branched structures.
Potassium iodate, KIO 3, like potassium iodide, has been issued as a prophylaxis against radioiodine absorption in some countries. [4] [5] It is also one of the iodine compounds used to make iodized salt. [6] Potassium hydrogen iodate (or potassium biiodate), KH(IO 3) 2, is a double salt of potassium iodate and iodic acid, as well as an acid ...