Iodine - Wikipedia
Iodine is a chemical element with symbol I and atomic number 53. It is the heaviest of the stable halogens and has a violet color and a high melting point. Learn about its discovery, isotopes, and uses in medicine and industry.
Iodine - Element information, properties and uses | Periodic Table
Iodine is a black, shiny, crystalline solid with atomic number 53 and relative atomic mass 126.904. It is an essential element for humans and has many commercial uses in photography, medicine, chemistry and more.
Iodine | Chemical Properties, Uses, & Applications | Britannica
2024年11月11日 · iodine (I), chemical element, a member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. In 1811 the French chemist Bernard Courtois obtained a violet vapor by heating seaweed ashes with sulfuric acid as a …
Iodine | I2 | CID 807 - PubChem
Iodine is a naturally occurring element found in sea water and in certain rocks and sediments. There are non radioactive and radioactive forms of iodine. Iodine is used as a disinfectant for cleaning surfaces and storage containers and is used …
Iodine Facts (Atomic Number 53 or I) - Science Notes and Projects
2023年9月30日 · Iodine is a chemical element with the symbol I and atomic number 53. This halogen occurs in the human diet, primarily in iodized salt, and is essential for human health in trace amounts. Iodine plays a crucial role in thyroid function, helping to regulate metabolism.
Iodine - Element, Halogen, Gas | Britannica
2024年11月11日 · Molecules of elemental iodine, consisting of two atoms (I 2), combine with iodides to form polyiodides (typically I 2 + I − → I −3), accounting for the high solubility of iodine in solutions that contain soluble iodide.
The Comprehensive Guide to Iodine: Uses, Properties, and Safety
Learn about iodine, a non-metal halogen with the symbol "I" and atomic number 53. Discover its history, physical and chemical characteristics, common compounds, reactions, sources, and applications in various fields.
Iodine | I (Element) - PubChem
Iodine is a bluish-black, lustrous solid, volatizing at ordinary temperatures into a blue-violet gas with an irritating odor; it forms compounds with many elements, but is less active than the other halogens, which displace it from iodides.
Iodine Facts, Symbol, Discovery, Properties, Uses - Chemistry …
Iodine is a crystalline metalloid with the chemical symbol I and the atomic number 53. It is a member of the halogen family and forms compounds with other elements. Learn more about its history, identification, atomic data, and applications.
Iodine (I) - Element Information, Properties, Health Effects & Uses
Iodine is a dark grey or purple blackish nonmetallic element with atomic number 53 and symbol I. It is the least reactive and most electropositive halogen, and is essential for thyroid function and brain development.