The document discusses the element iodine, including its discovery in 1811 by Bernard Courtois who was looking for a way to produce gunpowder for Napoleon's army. Iodine is used in some medications, as a disinfectant, in dyes, catalysts and photography. It provides important nutrients to the human body by nourishing the thyroid gland.

2. BondBook Iodine is looking for an Elemental Bond ! Wall Photos Uses History Trends Logout Photos of Iodine Send Iodine a message Poke Iodine Wall Info Photos Family Write something… Share Information Discovered: 1811 Atomic Number: 53 Average Atomic Mass : 126.90447 Classification : Non-Metal Isotopes (37) Iodine for those who don ’t know, my stable isotope mass number is 127. Bromine What’s up fam? Are you going to the Halogen family reunion? I - Ay yo! Can an isotope get a shout out? Man I am the most appearing in nature! October 28, 2011 Iodine wants a bonding relationship! October 9, 2011 October 29, 2011 October 28, 2011 Iodine Learn your configuration! @Electro.net #Not SPAM! October 9, 2011

4. BondBook Wall Photos Uses History Trends Logout Wall Info Photos Family Photos of Iodine 7 Photos Iodine’s Albums 3 Photo Alums Lewis Dot Structure 5 photos Isotopes(Bohr Models) 37 photos Profile Pictures 1 photo Iodine is looking for an Elemental Bond !

7. BondBook Discovery Wall Photos Uses History Trends Logout In 1811 when Bernard Courtois discovered iodine, iodine is used in some medication but the discoverer wasn’t searching for a way to cure humans. Actually, Bernard was looking for a way to kill humans. Napoleons’ army was running low on gunpowder, which is, Saltpeter (potassium nitrate—KNO3—sometimes) is a major component in gunpowder and requires an abundant source of potassium carbonate in order to be manufactured. Potassium carbonate is extracted from wood ashes, but the war had gone on so long that they’d run out of willow wood, the preferred source. Someone suggested using dried seaweed (burnt to ash).

8. BondBook Wall Photos Uses History Trends Logout Wall Info Photos Family Iodine is looking for an Elemental Bond ! Atomic Radius Ionization Energy Electronegativity