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This is an accepted version of this page This is the latest accepted revision, reviewed on 9 January 2025. 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, black ...
lustrous metallic gray solid, black/violet liquid, violet gas: Standard atomic weight A r °(I) ... Spectral lines of iodine: Other properties; Natural occurrence:
For example, the chemically very active nonmetals fluorine, chlorine, bromine, and iodine have an average electronegativity of 3.19—a figure [i] higher than that of any metallic element. The chemical distinctions between metals and nonmetals is connected to the attractive force between the positive nuclear charge of an individual atom and its ...
The role of iodine in mammary tissue is related to fetal and neonatal development, but its role in the other tissues is not well known. [8] It has been shown to act as an antioxidant [8] and antiproliferant [9] in various tissues that can uptake iodine. Molecular iodine (I 2) has been shown to have a suppressive effect on benign and cancerous ...
Iodine. The mildest of the halogens, iodine is the active ingredient in tincture of iodine, a disinfectant. This can be found in household medicine cabinets or emergency survival kits. Tincture of iodine will rapidly dissolve gold, [167] a task ordinarily requiring the use of aqua regia (a highly corrosive mixture of nitric and hydrochloric acids).
Iodine-135 is an isotope of iodine with a half-life of 6.6 hours. It is an important isotope from the viewpoint of nuclear reactor physics . It is produced in relatively large amounts as a fission product , and decays to xenon-135 , which is a nuclear poison with the largest known thermal neutron cross section , which is a cause of multiple ...
The iodine cycle is a biogeochemical cycle that primarily consists of natural [1] and biological processes [3] that exchange iodine through the lithosphere, hydrosphere, and atmosphere. [ 3 ] [ 2 ] Iodine exists in many forms, but in the environment, it generally has an oxidation state of -1, 0, or +5.
Where natural levels of iodine in the soil are low and vegetables do not take up the iodine, iodine added to salt provides the small but essential amount of iodine needed by humans. An opened package of table salt with iodide may rapidly lose its iodine content in high temperature and high relative humidity conditions through the process of ...
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