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).

Jun 14, 2020 · You won’t find the letter “J” on the IUPAC periodic table of the elements. However, J was the symbol for the element jod or iodine on Mendeleev’s periodic table. In some countries (e.g., Norway, Poland, Sweden, Serbia, Croatia), the element iodine is known by the name jod, even though the

Element Iodine (I), Group 17, Atomic Number 53, p-block, Mass 126.904. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

Jan 10, 2025 · 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 was discovered in May 1811 by Bernard Courtois (1777-1838) in Dijon. Courtois was manufacturer of salpeter (potassium nitrate, KNO 3), a major component of gunpowder. In the early 19th century, France was at war and needed enormous quantities of gunpowder.

It forms compounds with most elements, but is less reactive than the other halogens, which displace it from iodides. Iodine exhibits some metallic-like properties. It dissolves readily in chloroform, carbon tetrachloride, or carbon disulphide to form beautiful purple solutions.

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.

May 7, 2019 · Iodine is element 53 on the periodic table, with element symbol I. Iodine is an element you encounter in iodized salt and some dyes. A small amount of iodine is essential for nutrition, while too much is toxic. Here are facts about this interesting, colorful element.

Jod - Properties, history, name origin, facts, applications, isotopes, electronic configuation, crystal structure, hazards and more; Interactive periodic table of the chemical elements.

Jan 14, 2025 · A chemical element (symbol: I) with an atomic number of 53; one of the halogens. An antiseptic incorporating the element. (countable, uncountable, obsolete) An iodide. Note that the chemical symbol J (not I) is sometimes used in German chemistry texts.