Iron
Iron, (Latin ferrum,"iron") symbol Fe, magnetic, malleable, silvery white metallic element. The atomic number of iron is 26; iron is one of the transition elements of the periodic table.Iron is probably the most precious of all metals, since man would certainly miss this element more than any other, even the so-called precious ones. In the beginning of the 14th century, when iron was rare, some iron kitchen utensils of Edward III where classified as jewelry, and iron accessories were preferentially seek by robbers. The name "iron" comes from the Scandinavian "iarn". Many fantastic stories have been told about the origin of iron. Some of them say that was iron a gift of the Gods while others try to describe it as coming from meteoric sources. As we all know iron can be reduced from several ores present in Nature. It is told that iron was produced for the first time when some pieces of ore, used in cook fires, reduced, when fires were kept long enough. After this, it was observed that higher temperatures (and wind) lead a better iron. This method was improved by several tricks until the creation of the furnace. Iron has been known and used since prehistoric times. The writings of the most early civilizations refer to
Chemical and Physical PropertiesIron metal reacts in moist air by oxidation to give a hydrated iron oxide. In practice, the Fe(II) is present as the complex ion [Fe(OH2)6]2+. These mines continue to pose threats to state waters through increased stream sedimentation. Where Iron is foundIron is the most abundant element in the universe. The direct reaction between iron metal and iodine can be used to prepare iron (II) iodide, FeI2. Fe(s) + I2(s) FeI2(s) (grey)Reaction of iron with acidsIron metal dissolves readily in dilute sulphuric acid in the absence of oxygen to form solutions containing the aquated Fe (II) ion together with hydrogen gas, H2. In the western region of the state, shafts from the mining of zinc, and stream sedimentation from manganese and iron are prevalent. Iron compounds are employed for medicinal purposes in the treatment of anemia, when the amount of hemoglobin or the number of red blood corpuscles in the blood is lowered. Its nuclei are very stable; Iron is a principal component of a meteorite class known as siderites and is a minor constituent of the other two meteorite classes. Environmental ProblemsThe impacts of past mining on the environment and the public's health and safety are present in varying degrees throughout the state. From the core of the earth -- 2150 miles in radius -- is thought to be largely composed of iron with about 10 percent occluded hydrogen. Across the state abandoned quarries pose numerous dangers to public health and safety. This does not protect the iron surface to further reaction since it flakes off, exposing more iron metal to oxidation. 4Fe(s) + 3O2(g) 2Fe2O3(s)3Fe(s) + 2O2(g) Fe3O4(s)Reaction of iron with waterAir-free water has little effect upon iron metal.
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