Entity: IODINE
Iodine is a nonmetallic chemical element and the heaviest nonradioactive halogen, occurring as a grayish-black crystalline solid that sublimes to a dense violet vapor when heated. It is commonly used in medicine as an antiseptic.
IODINE
Etymology
The word 'iodine' originates from the French 'iode' and the Greek 'eidos', meaning violet.
Definition
Iodine is a nonmetallic halogen element occurring as a grayish-black crystalline solid that sublimes to a dense violet vapor when heated. It is commonly used in medicine as an antiseptic.
Historical Context
Iodine was discovered in 1811 by Bernard Courtois, a French chemist. Its antiseptic properties were later recognized, leading to its widespread use in medicine.
Cultural Significance
Iodine plays a crucial role in thyroid function and is essential for human health. It is also used in various industrial applications, including the production of dyes and pharmaceuticals.
Related Concepts
Other halogens include fluorine, chlorine, bromine, and astatine. Iodine is unique for its distinctive color and properties.
See Also
A nonmetallic halogen element occurring as a grayish-black crystalline solid that sublimes to a dense violet vapor when heated, commonly used in medicine as an antiseptic.