Table of Contents
What family group does iodine belong to?
iodine (I), chemical element, a member of the halogen elements, or Group 17 (Group VIIa) of the periodic table.
What is a iodine classified as?
halogen
Iodine is a chemical element with symbol I and atomic number 53. Classified as a halogen, Iodine is a solid at room temperature.
What is the family and period of iodine?
| Iodine | |
|---|---|
| Group | group 17 (halogens) |
| Period | period 5 |
| Block | p-block |
| Electron configuration | [Kr] 4d10 5s2 5p5 |
Is iodine in the same family as chlorine?
Bromine, chlorine, fluorine and iodine belong to a family of elements known as halogens. Halogens share similar properties like disinfection and bleaching.
What is iodine most commonly used for?
Today, iodine has many commercial uses. Iodide salts are used in pharmaceuticals and disinfectants, printing inks and dyes, catalysts, animal feed supplements and photographic chemicals. Iodine is also used to make polarising filters for LCD displays.
Is iodine very reactive?
Iodine is the least reactive of the halogens as well as the most electropositive, meaning it tends to lose electrons and form positive ions during chemical reactions. It is also the heaviest and the least abundant of the stable halogens.
What is iodine used for?
Iodine is a mineral found in some foods. The body needs iodine to make thyroid hormones. These hormones control the body’s metabolism and many other important functions. The body also needs thyroid hormones for proper bone and brain development during pregnancy and infancy.
Which is more reactive iodine or fluorine?
Rather, fluorine is the most reactive halogen. It reacts violently with almost all chemicals. It shows that the B.D.E value of iodine (151 kJ/mol) is less than that of fluorine (158 kJ/mol). So, iodine should be the most reactive halogen and not halogen.
Where does iodine come from on the periodic table?
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. Iodine comes from the Greek word iodes, which means violet.
Where does the iodine in saltpetre come from?
Iodine is obtained commercially by releasing iodine from the iodate obtained from nitrate ores or extracting iodine vapour from the processed brine. In the early 1800s, Bernard Courtois of Paris manufactured saltpetre (potassium nitrate, KNO 3) and used seaweed ash as his source of potassium.
Who was the first person to discover iodine?
Iodine vapor is violet-colored. The element was discovered in 1811 by French chemist Bernard Courtois. Courtois discovered iodine by accident while he was making saltpeter for use in the Napoleonic Wars. Making saltpeter required sodium carbonate.
What is the color of iodine in liquid form?
Color and Other Properties. Solid iodine is blue-black in color, with a metallic sheen. At ordinary temperatures and pressures, iodine sublimates into its violet gas, so the liquid form is not seen.