Precious metals display a wide variety of oxidation states, though they generally prefer low-spin configurations: Predominantly +1positive 1 . It forms linear complexes like Gold (Au): Commonly +1positive 1 +3positive 3 typically adopts a square planar geometry.
orbitals are better screened, causing them to expand and become more chemically available. Chemistry of Precious Metals
ions act as complexing agents to stabilize the metal in solution as 3. Coordination Chemistry and Catalysis Precious metals display a wide variety of oxidation