Irídium – Wikipédia
Az irídium kémiai elem, vegyjele Ir, rendszáma 77, azaz a periódusos rendszer 77. eleme. Nyelvújításkori neve neheny. A természetben is előforduló egyik legnagyobb sűrűségű, nagyon kemény, törékeny, ezüstös-fehér színű átmenetifém, a platinacsoport tagja. A természetben a platina vagy ozmium elemekkel alkotott természetes ötvözetként fordul …
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Irídium – Wikipédia
Irídium Ez a szócikk a kémiai elemről szól. Hasonló címmel lásd még: Iridium (műhold). Az irídium kémiai elem, vegyjele Ir, rendszáma 77, azaz a periódusos rendszer 77. eleme. Nyelvújításkori neve neheny. [1] A természetben is előforduló egyik legnagyobb sűrűségű, nagyon kemény, törékeny, ezüstös-fehér színű átmenetifém, a platinacsoport tagja.
It's Elemental
Iridium and osmium were discovered at the same time by the British chemist Smithson Tennant in 1803. Iridium and osmium were identified in the black residue remaining after dissolving platinum ore with aqua regia, a mixture of 25% nitric acid (HNO 3) and 75% hydrochloric acid (HCl).Today, iridium is still obtained from platinum ores and as a by …
Iridium (Ir)- Properties, Health effects & Iridium Uses |Chemistry
Iridium is a transition metal of the platinum family with the symbol Ir and atomic number 77 in the periodic table. Iridium is a hard, lustrous, brittle, dense transition metal of the platinum family. Physical properties of Iridium. It is silverish-white and it is known to be the most corrosion-resistant element known. It is unaffected by air ...
Iridium
Iridium, with atomic number 77 and two stable isotopes, 191 and 193, turns up in an alloy with platinum in the standard bar and weight used for many years to define the metre and the kilogramme. The metre was originally one 10 millionth of the distance from the North Pole to the Equator in a great circle running through Paris, but this wasn't a ...
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Эрдэс бодисууд нь эсийн нөхөн төлжилт, мэдрэл дамжуулалт ба тархины үйл ажиллагаа, фермент нийлэгжил зэрэг бие махбодийн олон урвалжуудын зайлшгүй нэг хэсэг байдаг. Тэдгээр нь мөн эд эсийн солилцоонд оролцож булчингийн үйл ажиллагааг зохицуулж байдаг. Тухайлбал, төмөр нь хүчилтөрөгчийг цусаар …
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Haiti has the World's Second Largest Iridium Deposits
By Graham G. Henry - Oct 6, 2021 As difficult to work with as it is rare, iridium is found in large quantities in Haiti's southeast, which has the second largest reserves in the world. This metal is today worth more than gold and Bitcoin. Its resistance to high temperatures and corrosion makes it almost…