Iodine

Iodine is a chemical element with symbol I and atomic number 53. The name is from Greek ἰοειδής ioeidēs, meaning violet or purple, due to the color of iodine vapor.

Iodine and its compounds are primarily used in nutrition, and industrially in the production of acetic acid and certain polymers. Iodine's relatively high atomic number, low toxicity, and ease of attachment to organic compounds have made it a part of many X-ray contrast materials in modern medicine. Iodine has only one stable isotope. Iodine radioisotopes, such as ¹³¹I, are also used in medical applications.

Iodine is found on Earth mainly as the highly water-soluble iodide ion I⁻, which concentrates it in oceans and brine pools. Like the other halogens, free iodine occurs mainly as a diatomic molecule I₂, and then only momentarily after being oxidized from iodide by an oxidant like free oxygen. In the universe and on Earth, iodine's high atomic number makes it a relatively rare element. Its presence in ocean water has given it a role in biology. It is the heaviest essential element used widely by life in biological functions (only tungsten, employed in enzymes by a few species of bacteria, is heavier). Iodine's rarity in many soils, due to initial low abundance as a crust-element, and also leaching of soluble iodide by rainwater, has led to many deficiency problems in land animals and inland human populations. Iodine deficiency affects about two billion people and is the leading preventable cause of intellectual disabilities.

Iodine (film)

Iodine is a 2009 Canadian Sci-Fi drama film written and directed by Michael Stasko.

Plot

John Clem (Michael Stasko) heads north to investigate the disappearance of his estranged father. Upon arriving at the family cottage, John runs into Avery (Ray Wise), his father’s colleague. John receives no help on his dad’s disappearance, but instead, a new set of eyes in which to view the living world around him. Avery assures John that they had been working on a special project which involved using iodine as a water purification tool, to preserve their natural surroundings. Environmental concerns and future implications of modernized society become a share interest and source of impassioned philosophical discussion for the two and they bond. However, John being a man of immense insecurity and uncertainty is forced to endure isolating surroundings while on the search for his father. The pressure from the rest of the family causes John an emotional breakdown as he is unsure of whether he can trust Avery.

Iodine (disambiguation)

Iodine is a chemical element.

Iodine or iodine may also refer to:

See also

Fair

A fair (archaic: faire or fayre) is a gathering of people for a variety of entertainment or commercial activities. It is normally of the essence of a fair that it is temporary with scheduled times lasting from an afternoon to several weeks.

Types of fairs

Variations of fairs include:

Fair (band)

Fair is an alternative rock band currently signed to Tooth & Nail Records. It was created in 2005 from members of Aaron Sprinkle's touring band – Sprinkle, fellow Poor Old Lu alum Nick Barber, Erick Newbill, and Joey Sanchez.

The band released their first album, The Best Worst-Case Scenario, on June 6, 2006.

Members

Discography

Albums

References

External links

Fair (surname)

Fair is a surname and may refer to:

People

Fictional characters

See also