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A member of the platinum metals, iridium is white, like platinum, with a slight yellowish cast. Because of its hardness, brittleness, and very high melting point (the 9th of all elements), solid iridium is difficult to machine, form, or work. Powder metallugry is commonly used instead. Iridium is the only metal to maintain good mechanical properties in air at temperatures above 1600 °C. Iridium has a very high boiling point of 8002 °F (11th amoung all the elements) and becomes a superconductor at temperatures below 0.14 k.

Basic Information

  • atomic number- 77
  • atomic mass- 192
  • melting point- 2446 °C
  • boiling point- 4428 °C
  • normal phase- Solid
  • cost- about $500 per ounce
  • classification is metal
Origin of name comes from the Latin word "iridis"
Was discovered by S Tenant

-Aaron Holiday