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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).
Iodine is an essential element for humans, who need a daily intake of about 0.1 milligrams of iodide. Our bodies contain up to 20 milligrams, mainly in the thyroid gland. This gland helps to regulate growth and body temperature.
May 21, 2024 · iodine (I), chemical element, a member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. History. iodine. 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.
Jul 3, 2019 · Iodine is a lustrous blue-black solid which volatizes at room temperature into a violet-blue gas with an irritating odor. Iodine forms compounds with many elements, but it is less reactive than the other halogens, which will displace it. Iodine also possesses some properties typical of metals.
Iodine - Element, Halogen, Gas: Iodine is a nonmetallic, nearly black solid at room temperature and has a glittering crystalline appearance. The molecular lattice contains discrete diatomic molecules, which are also present in the molten and the gaseous states.
Sep 30, 2023 · 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 is a chemical element with the atomic number 53 and the symbol "I." It belongs to the halogen group of the periodic table. - Iodine plays an indispensable role in thyroid health, water purification, and various industrial applications.
A crystalline metalloid, iodine (pronounced EYE-eh-dine) belongs to the family of halogens. Denoted by the chemical symbol I, it undergoes sublimation when heated to form a purple gaseous vapor, sometimes called as Iodine gas whose molecular formula is I 2.
Apr 22, 2024 · Iodine is a chemical element with the symbol I and atomic number 53. It is a lustrous, purple-black, halogen gas that belongs to the group 17 elements in the periodic table. Iodine is found in small amounts in many minerals, and is also present in the oceans and other bodies of water.
Apr 30, 2010 · The human body contains 10-20 mg of iodine, concentrated mainly in the thyroid gland in the form of two hormones: 3,5,3´,5´-tetraiodo-thyronine (aka thyroxine or T4) and 3,3´,5-triiodothyronine (aka T3). These regulate growth and development in the young and control body temperature.
