Katrina

**Iodine**



toc = Quick Facts = - Symbol: I - Atomic Number: 53 - Mass Number: 127 - Number of protons: 53 - Number of electrons: 53 - Number of neutrons: 74 - Average Atomic Mass: 126.90

= Physical Properties = - Classification: Non-metal - Melting Point: 386.7 K - Boiling Point: 457.5 K - Appearance: Shiny, bluish-black, and solid (crystals). - At room temperature or earth temperatures, Iodine is a purple gas with an irritating odor. -Density: 4.94 g/mL

= History = In 1811, Bernard Courtois discovered Iodine. Courtois was searching for something that would kill humans because Napolean's army could have used it, but instead he discovered something that helps people. He was making Saltpeter, a major component in gunpowder, when he discovered Iodine. He added too much sulfric acid and all of a sudden, a purple vapor cloud appeared and formed crystals. Those crystals were Iodine. The seeweed used to make the Saltpeter came from the coasts of Normandy and Brittany.

= Modern Day = Today, there are twenty-three isotopes of Iodine. The only stable isotope of Iodine is I-127. All the other isotopes are radioactive. Iodine is very common today. It is found in many items used today. Some of those items are many disinfectant wipes or sprays, salt (Iodized Salt), liquids to put on open wounds, and Iodine is found in Thyroid. The Thyroid takes Iodine from the blood, which help create hormones. Those hormones are then sent back into the blood stream. Those hormones are what helps us with stress, pregnancy, and low levels of thyroid hormone. Today, a pack of 75 Clorox Disinfectant Wipes costs about $34.80. Today, a 4 lb. box of Iodized Salt costs about $3.95. Today, a gallon bottle of Sporicidin, a liquid containing Iodine that helps heal open wounds, costs about $105.85.

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= Sources  = **Web Sources:** "The History of Iodine." __Wellness Directory of Minnesota__. 15 Nov. 2008 . 

"Iodine Facts." __About.com__. 15 Nov. 2008 .

"Uses of Iodine." __Pleasent Ridge Union School District__. 16 Nov. 2008 .

**Print Sources:**

__Iodine: Understanding the Elements of the Periodic Table__. N.p.: Rosen Central , January 2009.
 * Picture Sources:**

"Iodine." __Theodore Gray__. 16 Nov. 2008 .

"Iodine." __Wikimedia Commons__. 16 Nov. 2008 .

"Periodic Table: Iodine." __Chemical Elements__. 16 Nov. 2008 .