Coinage Metal
Coinage Metal
Group IB Copper (Cu) = 29 3d104s1 Silver (Ag) = 47 4d105s1 Gold (Au) = 79 5d106s1 General configuration is (n -1) d10ns1 and being to d-block of periodic table i.e. coinage metals are transition metals. Coinage metals have characteristics color. Copper ? red Silver ? white Gold ? yellow They show common oxidation state of +1. Besides +1, copper has +2 and gold has +3 O.S. They lie at the lower part of electrochemical series. So they are least reactive metal and are found in native state