Major breakthroughs in chemistry occur in 1803, …
Years: 1803 - 1803
Major breakthroughs in chemistry occur in 1803, with the identification of the elements rhodium and palladium (by William Hyde Wollaston); osmium and iridium (by Smithson Tennant); and cerium (by Wilhelm Hisinger, Jons Jakob Berzelius and Martin Heinrich Klaproth).
