home *** CD-ROM | disk | FTP | other *** search
- IRIDIUM
- Atomic symbol - Ir
- Atomic weight - 192.22
- Atomic number - 77
- Electron configuration - 2-8-18-32-15-2
- Oxidation states - +3, +4
- State of matter - solid
- Heavy metal-ductile
- Discovered in 1804 by Smithson Tennant
- Boils at 4527 ¯C, melts at 2410 ¯C
-
- Notes:
- Very dense and rare, iridium has a silvery-white color. Its main use is in the
- form of platinum alloys.
-