Negara

Ir ( Iridium )

Keterangan

       Hard, lustrous, silvery metal of the platinum group. Stable to air and water, inert to all acids, but fused NaOH will attack it.

Nama lain (trademark, branding etc.)

Iridium, Iridij, Iridium - s, Iridio, Иридий

Spesifikasi Produk

Overview of Iridium Atomic Number: 77 77 Group: 9 9 Period: 6 6 Series:  Transition Metals Relative Atomic Mass (12C=12.000)  192.2 Boiling Point 4701K 4428°C 8002°F Melting Point 2716K 2443°C 4429°F Density/kg m-3  22420 Ground State Electron Configuration  [Xe]4f145d76s2 Electron Affinity(M-M-)/kJ mol-1  -190 Discoverer:  S.Tennant Discovery Location:  London England Discovery Year:  1803 Name Origin: Latin: iris, iridis (rainbow).

Aplikasi

      Used with osmium to tip gold pen points, to make crucible and special containers. Used to make alloys used for standard weights and measures, and heat-resistant alloys. Also used incancer irradiation, hypodermic needles, helicopter spark plugs and as hardening agent for platinum.

Bahan Baku

Iridium is the chemical element with symbol Ir and atomic number 77. A very hard, brittle, silvery-white transition metal of the platinum family, iridium is the second-densest element (after osmium) and is the most corrosion-resistant metal, even at temperatures as high as 2000 °C. Although only certain molten salts and halogens are corrosive to solid iridium, finely divided iridium dust is much more reactive and can be flammable.

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