Iridium report
Iridium is a metallic element of the platinum group with the atomic number 77 , atomic mass 192.2, boiling point at about 44oo degrees celcuis (7952 degrees farinheight), and a melting point of 2450 c (4442 f) the irduims symbol is Ir. Iriduim was discovered by a British chemist by the name Smithson Tennat (1761-1815) in 1804 and received its name from the iridescent nature of some of its compounds. it is an extremely rare metal, ranking sixtyfirst in order of abundance of the elements in the crust of the earth and is found in alluvial deposits alloyed with platinum as plat…
