A. Element
1. Palladium is a chemical element with the symbol Pd and atomic number 46.
2. It is a rare and lustrous silvery-white metal.
3. It is discovered in 1803 by the English chemist William Hyde Wollaston.
B. Platinum group metals (PGMs)
1. Palladium, platinum, rhodium, ruthenium, iridium, and osmium form platinum group metals (PGMs).
2. They...