Detailed description on the Element Iridium.

atomic number 77 field of study Iridium is a bi alloy element of the atomic number 78 group with the atomic number 77 , atomic mass 192.2, boiling lay at most(prenominal) 44oo degrees celcuis (7952 degrees farinheight), and a melting point of 2450 c (4442 f) the irduims symbol is Ir. Iriduim was find by a British pharmacist by the let out Smithson Tennat (1761-1815) in 1804 and received its name from the opalescent nature of any(prenominal) of its compounds. it is an extremely r be metal, ranking sixtyfirst in put up of abundance 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 regular the put through of aqua regia (q.v.) in its chemical compounds it f orms divalent 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 stark(a) platinum. Platinium-iridium alloys containing larger percentages of iridium are used in the qualification 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 super 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 radioisotopes. The most stable being Ir-19! 2 with 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 lay out it extremely multipurpose since uve pulled together a lot of poppycock i couldnt find. If you extremity to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper