The Platinum Group Elements (PGE: Osmium, Iridium, Ruthenium, Rhodium, Platinum, and Palladium), also known as platinum group metals and platinoids, are transition metals located in the d-block of the Periodic Table of Elements (Groups VIII, IX, and X, Periods 5 and 6).The atomic radii of the Os, Ir, and Pt subgroup, caused by …Web