- Iodine is a chemical element. The body needs iodine but cannot make it. The iodine needed by the body must come from the diet. As a rule, there is very little iodine in food, unless it has been.
- The atomic number of iodine is 53, meaning all atoms of iodine possess 53 protons.
Element Iodine (I), Group 17, Atomic Number 53, p-block, Mass 126.904. Quick books for mac. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Predicted data is generated using the US Environmental Protection Agency’s EPISuite™. Log Octanol-Water Partition Coef (SRC): Log Kow (KOWWIN v1.67 estimate) = 1.04 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42): Boiling Pt (deg C): 493.36 (Adapted Stein & Brown method) Melting Pt (deg C): 182.72 (Mean or Weighted MP) VP(mm Hg,25 deg C): 2.8E-009 (Modified Grain method. Iodine is a naturally occurring element found in sea water and in certain rocks and sediments. There are non radioactive and radioactive forms of iodine. Iodine is used as a disinfectant for cleaning surfaces and storage containers and is used in skin soaps and bandages, and for purifying water. Iodine is also added to some table salt to ensure that all people in the United States have enough.
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Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work!Iodine (I), chemical element, a member of the halogen elements, or Group 17 (Group VIIa) of the periodic table.
| atomic number | 53 |
|---|---|
| atomic weight | 126.9044 |
| melting point | 113.5 °C (236 °F) |
| boiling point | 184 °C (363 °F) |
| specific gravity | 4.93 at 20 °C (68 °F) |
| oxidation states | −1, +1, +3, +5, +7 |
| electron configuration | 2-8-18-18-7 or (Kr)5s24d105p5 |
History
You gotta hear see it to believe it!. In 1811 the French chemist Bernard Courtois obtained a violet vapour by heating seaweed ashes with sulfuric acid as a by-product of the manufacture of saltpetre. This vapour condensed to a black crystalline substance, which he called “substance X.” In 1813 British chemist Sir Humphry Davy, who was passing through Paris on his way to Italy, recognized substance X as an element analogous to chlorine; he suggested the name iodine from the Greek word ioeides, “violet coloured.”
Atomic No Of Iodine Used
Occurrence and distribution
Iodine is never found in nature uncombined, and it is not concentrated sufficiently to form independent minerals. Parental control software mac ccsupernalcrown. It is present in seawater, but sparingly, as the iodide ion, I−, to the extent of approximately 50 mg per metric ton (0.0016 ounce per ton) of seawater. It is also formed in seaweeds, oysters, and cod livers. Sodium iodate (NaIO3) is contained in crude Chilesaltpetre (sodium nitrate, NaNO3). The human body contains iodine in the compoundthyroxine, which is produced in the thyroid gland.
Atomic No Of Iodine
The only naturally occurring isotope of iodine is stable iodine-127. An exceptionally useful radioactive isotope is iodine-131, which has a half-life of eight days. It is employed in medicine to monitor thyroid gland functioning, to treat goitre and thyroid cancer, and to locate tumours of the brain and of the liver. It is also used in investigations to trace the course of compounds in metabolism. Several iodine compounds are used as contrast mediums in diagnostic radiology. In aqueous solution even minute amounts of iodine in the presence of starch produce a blue-black colour.
Atomic No Of Iodine Symbol
Atomic No Of Iodine Powder
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