Things you should know - Number 53 – iodine

Things you should know - Number 53 – iodine

è iodine is a chemical element of atomic number 53 in the Group of halogens (Group 17) of the periodic table of elements.
Its symbol (s) è (viola).
This element can be found in the ò form as diatonic molecular iodine. È a trace element and è used mostly in medicine, photography, and as a dye. Chemically, iodine è the least reactive halogen and electronegative as it is.
As with all other halogens (members of Group VII in the periodic table), iodine molecules form diatonic and therefore è iodine I2 of molecular formula. As halogens all form many compounds with other elements, but the less reactive è of the Group of metallic and has certain characteristics. You can submit various oxidation conditions:-1, 1, 3, 5, 7. also reactive with È mercury and sulphur. Iodine è lalogeno less abundant, performing in the crust with a concentration of 0. 14 PPM, while nellacqua sea è its abundance of 0052 PPM. è iodine from iodides, obtained the present nellacqua of the sea and seaweed, or in the form of the iodates, nitrates of IO3-from saltpeter (formerly separated these). The first method for the separation of è nitrate iodine was discovered by Chilean wears Pedro Gamboni, in their Office installations of nitrate of Sevastopol, located in the region of Tarapac. There are 37 isotopes of iodine, but only the I-127 è stable.
The artificial radioisotope I-131 (a beta emitter) with a half-life of 8 days è was used in the treatment of cancer and other pathologies of the thyroid gland. Iodine 129 (with a half-life of about 16 million years) can be produced by ò Xenon-129 to the atmosphere of Earth, or even with the decay of uranium-238. While uranium-238 è product for a number of activities related to nuclear allenergia à, its presence (the ratio of 129I\/I) pu ò indicate the type of activity in a particular place à. For this reason, the 129i è been used in studies of rainwater in the follow-up to the Chernobyl allincidente. Also è was used as a tracer nellacqua surface and as an indicator of dispersal of wasteful manufacturing environment.
Other applications can be disabled from the production of iodine 129 in the lithosphere by a number of mechanisms of decay. In many respects the 129i è similar to chlorine-36. È a soluble halogen, relatively non-reactive, exists mainly as non-solvated anion and è produced from thermonuclear reactions and the in situ cosmog. Hydrological studies, 129i concentrations generally occur as the ratio of 129i to total iodine (virtually all iodine-127). As in the case of 36 CL\/Cl, 129I\/I ratios of nature are quite small, 10-14-10-10 (thermonuclear 129I\/I peak during the 1960s and 1970s reached values of 10-7). The 129i differs from chlorine-36 that its è most (16 compared to 0. 3 million years), and è è highly Biophilic found in multiple Ionic forms (usually I-and iodates) which have different chemical behavior. The management of the United States food and drugs (FDA) recommends 150 micrograms of iodine per day for both men and women. There ò è required for the production of thyroid hormones. Natural sources of iodine include sea products such as algae and some fish, cos ì as plants grown in iodine-rich soil. An algae iodine-pi ù rich è lalga Brown, bass, cod, Pollock and perch è in this mineral-rich. Salt for daily consumption fortified with iodine is often è, and è known as salt iodizzato. Pu ò be immune due to a disorder that leads to uneccessiva production of thyroid hormones, which does not allow the physiological functioning of the thyroid gland, or even from uneccessiva iodine intake through iodine foods such as algae or supplements used to promote weight loss that are high in iodine.
Symptoms include: increase the basal metabolic rate, voracious lappetito, thirst, weight loss, weakness, heat intolerance, nervousness, among other heart problems.
è corrosive iodine, è care needed when comes the iodine because é direct contact with skin can cause injuries ò. Iodine vapor è very irritating to the eyes. Good elasticity à minimum of contact a dose of eye drops in the eye\/s. È also dangerous to mucous membranes.
Nellaria iodine concentration should not exceed 1 mg\/m. When mixed with ammonia, è pu ò form the triyoduro of nitrogen è extremely sensitive and capable of explode unexpectedly.
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