29 Facts About Iron

Iron is a chemical element with symbol Fe and atomic number 26.

Iron is the metal at the active site of many important redox enzymes dealing with cellular respiration and oxidation and reduction in plants and animals.

Iron is the sixth most abundant element in the universe, and the most common refractory element.

Iron is sometimes considered as a prototype for the entire block of transition metals, due to its abundance and the immense role it has played in the technological progress of humanity.

Iron is a common intermediate in many biochemical oxidation reactions.

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Iron is the first of the transition metals that cannot reach its group oxidation state of +8, although its heavier congeners ruthenium and osmium can, with ruthenium having more difficulty than osmium.

Iron is by far the most reactive element in its group; it is pyrophoric when finely divided and dissolves easily in dilute acids, giving Fe.

Iron oxide exists, though it is unstable at room temperature.

Iron reacts with fluorine, chlorine, and bromine to give the corresponding ferric halides, ferric chloride being the most common.

Iron complexes are quite similar to those of chromium with the exception of iron's preference for O-donor instead of N-donor ligands.

Iron compounds tend to be oxidized to iron compounds in the air.

Iron is one of the elements undoubtedly known to the ancient world.

Iron plays a certain role in mythology and has found various usage as a metaphor and in folklore.

The Iron Age was closely related with Rome, and in Ovid's Metamorphoses.

Iron ore is then treated with these gases in a furnace, producing solid sponge iron:.

Iron catalysts are traditionally used in the Haber–Bosch process for the production of ammonia and the Fischer–Tropsch process for conversion of carbon monoxide to hydrocarbons for fuels and lubricants.

Iron based catalysts play a crucial role in converting biobased raw materials into valuable bulk- and fine chemicals, in fuel cells as well as in removal of hazardous chemicals.

Iron chloride finds use in water purification and sewage treatment, in the dyeing of cloth, as a coloring agent in paints, as an additive in animal feed, and as an etchant for copper in the manufacture of printed circuit boards.

Iron sulfate is used as a precursor to other iron compounds.

Iron sulfate is used in settling minute sewage particles in tank water.

Iron-containing proteins participate in transport, storage and used of oxygen.

Iron acquisition poses a problem for aerobic organisms because ferric iron is poorly soluble near neutral pH.

Iron is pervasive, but particularly rich sources of dietary iron include red meat, oysters, lentils, beans, poultry, fish, leaf vegetables, watercress, tofu, chickpeas, black-eyed peas, and blackstrap molasses.

Iron is most available to the body when chelated to amino acids and is available for use as a common iron supplement.

Iron deficiency is the most common nutritional deficiency in the world.

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Iron uptake is tightly regulated by the human body, which has no regulated physiological means of excreting iron.

Iron plays an essential role in marine systems and can act as a limiting nutrient for planktonic activity.

Iron can be oxidized by marine microbes under conditions that are high in iron and low in oxygen.

Iron can enter marine systems through adjoining rivers and directly from the atmosphere.