Iodine - Wikipedia
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 | I2 | CID 807 - PubChem
Violet-black crystals with a metallic luster and a sharp odor. Mp: 133.5 °C, bp: 185 °C. Emits toxic vapor at room conditions; vapor becomes visibly purple when its concentration builds up in a confined space. Nearly insoluble in water but very soluble in aqueous solutions of iodides.
Iodine Facts (Atomic Number 53 or I) - Science Notes and Projects
2023年9月30日 · He observed violet fumes, which condensed to form dark crystals, and these were later identified as iodine. The name iodine derives from the Greek word ‘iodes’, meaning violet or purple, referring to the color of iodine vapor. Iodine is a lustrous dark-gray to purple-black solid at room temperature.
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 …
Sublimation of Iodine | Exhibition chemistry | RSC Education
2012年12月31日 · Iodine crystals will quickly begin to deposit on the base of the finger and start to grow into beautiful shapes. The longer you leave the crystals growing, the larger they will become. After allowing the equipment to cool and the vapour has dissipated, students can come and inspect the crystals.
Iodine - Element information, properties and uses | Periodic Table
Element Iodine (I), Group 17, Atomic Number 53, p-block, Mass 126.904. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Iodine - Element, Halogen, Gas | Britannica
2024年11月11日 · 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.
Iodine (I) - Definition, Preparation, Properties, Uses ... - Examples
2024年6月26日 · Iodine crystals are shiny and lustrous with a metallic sheen, signifying its crystalline solid state. Electronegativity: Iodine has a relatively high electronegativity with a Pauling value of 2.66. This makes it a good oxidizing agent and reactive towards many elements and compounds.
WebElements Periodic Table » Iodine » the essentials
Iodine is a bluish-black, lustrous solid. It volatilises at ambient temperatures into a pretty blue-violet gas with an irritating odour. It forms compounds with most elements, but is less reactive than the other halogens, which displace it from iodides. …
The Comprehensive Guide to Iodine: Uses, Properties, and Safety
- Iodine crystals can be used to purify water in emergency situations. - The radioactive isotope ¹³¹I is used in the treatment of thyroid cancer. - Iodine is a fascinating and multifaceted element with an array of uses ranging from industrial manufacturing to crucial biological functions.