Name the common elements present in the anode mud in electrolytic refining of copper.

Metals which are less reactive and valuable as silver, gold, platinum, etc., are found in anode mud. The reason is that being less reactive, they do not lose electrons at anode and collect under the anode as anode mud. Copper metal at anode loses electrons in a usual manner to form Cu2+ ions.At anode Cu(s)⟶Cu2++(aq)+2e−                Noble metals ⟶ No reaction