Platinum group

As platinum metals or Platinum Group Metals, in English and Platinum Group Metals (PGM ), called the elements of groups 8 to 10 of the 5th period (the "light platinum group metals ": ruthenium, rhodium, palladium) and the 6th period (the ' heavy platinum group metals " osmium, iridium, platinum) referred to. All platinum metals are precious metals have high densities and similar chemical properties; they fall on the nickel and copper production as a by- product.

However, the platinum group, the group 10 of the periodic table with the elements nickel, palladium and platinum.