Detailed description on the Element Iridium.

atomic number 77 field of study Iridium is a bi metal element of the atomic number 78 group with the atomic number 77 , atomic mass 192.2, boiling lay at some(prenominal) 44oo degrees celcuis (7952 degrees farinheight), and a melting point of 2450 c (4442 f) the irduims symbol is Ir. Iriduim was detect by a British pharmacist by the holler Smithson Tennat (1761-1815) in 1804 and received its name from the opalescent nature of some of its compounds. it is an exceedingly r are metal, ranking sixtyfirst in assure of copiousness of the elements in the crust of the earth and is free-base in alluvial deposits alloyed with platinum as platin atomic number 77, or with osmium as osmiridium. Iridium is a white, brittle , extremely life-threatening metal. its specific gravity is exceeded only by that of osmium, which is a portion of one percent denser. it is extremely inhert chemically resisting level off the put through of aqua regia (q.v.) in its chemical compounds it form s double and trivalent salts. It is use chiefly as an alloying material for platinum; the alloy which contains about 10 percent iridium, is far harder than unadulterated platinum. Platinium-iridium alloys containing larger percentages of iridium are used in the make precision instruments, such(prenominal) as: surgical tools. pen points, and standard weights and lenghts. Iridium has a sensationalistic cast to it. salts of iridium are highly colored. it is the most erosion resistant metal known, not attacked by any acid, solely is attacked by molten salts.

there are two inwrought isotopes of iridium, and 4 radiois otopes. The most stable existence Ir-192 wi! th a half-life of 73.83 days. Ir-192 decays into platium, while the other radioisotopes decays onto osium. Iridium metal is generally non-toxic payable to its relative unreactivity but iridium compounds should be considered highly toxic. your report was quite concise and succinct. I undercoat it extremely multipurpose since uve pulled together a lot of shove i couldnt find. If you extremity to get a full essay, order it on our website: OrderCustomPaper.com

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