Discovery of iridium

Iridium is a chemical element; it has the symbol Ir and atomic number 77. This very hard, brittle, silvery-white transition metal of the platinum group is considered the second-densest naturally occurring metal, with a density of 22.56 g/cm3 (0.815 lb/cu in) as defined by experimental X-ray crystallography.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Which happened first?

• Discovery of iridium and Discovery of rhodium happened in the same year
• Discovery of iridium and Discovery of palladium happened in the same year
• Discovery of iridium happened 1 year after Discovery of tantalum
• Discovery of iridium happened 1 year before Discovery of cerium
• Discovery of iridium happened 1 year before Discovery of osmium

Timeline

1. Discovery of tantalum1802
2. Discovery of iridium (this page)1803
3. Discovery of palladium1803
4. Discovery of rhodium1803
5. Discovery of cerium1804
6. Discovery of osmium1804

Related

• Discovery of hydrogen1766
• Discovery of oxygen1774
• Discovery of PlutoFebruary 18, 1930
• Discovery of carbon1789
• Discovery of aluminium1825
• Discovery of heliumAugust 18, 1868
• Discovery of nitrogen1772
• Discovery of sulfur1777