出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/06/17 09:08 UTC 版)
The platinum group metals (abbreviated as the PGMs; alternatively, the platinoids, platidises, platinum group or platinum metals) is a term used sometimes to collectively refer to six metallic elements clustered together in the periodic table. These elements are all transition metals, lying in the d-block (groups 8, 9, and 10, periods 5 and 6).