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- DictionaryI·o·dine/ˈīəˌdīn/
noun
- 1. the chemical element of atomic number 53, a nonmetallic element forming black crystals and a violet vapor.
Iodine is a nonmetallic chemical element and the heaviest nonradioactive halogen. It is a very nearly black crystalline solid that can turn to a deep violet, irritating vapor. In nature it is never found uncombined, and occurs mostly in brines and seaweeds.
IODINE definition: 1. a chemical element that is found in small amounts in sea water and used to prevent infection 2…. Learn more.
Iodine is a chemical element; it has symbol I and atomic number 53. The heaviest of the stable halogens, it exists at standard conditions as a semi-lustrous, non-metallic solid that melts to form a deep violet liquid at 114 °C (237 °F), and boils to a violet gas at 184 °C (363 °F).
Aug 22, 2024 · iodine (I), chemical element, a member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. History. In 1811 the French chemist Bernard Courtois obtained a violet vapor by heating seaweed ashes with sulfuric acid as a by-product of the manufacture of saltpeter.
Iodine definition: a nonmetallic halogen element occurring at ordinary temperatures as a grayish-black crystalline solid that sublimes to a dense violet vapor when heated: used in medicine as an antiseptic.
Element Iodine (I), Group 17, Atomic Number 53, p-block, Mass 126.904. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Jun 26, 2024 · Iodine is a chemical element with the symbol “I” and atomic number 53. It’s a non-metallic, dark-gray or purple-black, lustrous solid at room temperature. Iodine is essential in biology, notably in the synthesis of thyroid hormones in the human body, which regulate metabolism and other important functions.
Apr 19, 2017 · Iodine is an essential element needed for life. It is best known for the vital role it plays in thyroid hormone production in humans as well as in all vertebrates.
Aug 22, 2024 · Also known as: I. Written by. Stefan Schneider. Senior Research Scientist, Air Force Research Laboratory, Edwards Air Force Base, Calif. Stefan Schneider, Karl Christe. Research Professor of Chemistry, Department of Chemistry, University of Southern California, Los Angeles, Calif. Karl Christe • All. Fact-checked by.
noun. a bluish-black element of the halogen group that sublimates into a violet irritating gas. Its compounds are used in medicine and photography and in dyes. The radioisotope iodine-131 (radioiodine), with a half-life of 8 days, is used in the diagnosis and treatment of thyroid disease.
