Why would you reasonably expect cadmium to be a contaminant in zinc but not in silver?

1 Answer
Mar 15, 2016

Answer:

Well, cadmium commonly forms a #Cd^(2+)# ion as does #Zn^(2+)#.

Explanation:

Silver commonly forms the univalent, #Ag^+# ion, so it could not directly replace #Zn^(2+)# in ores. As I recall, and you will have to read up on this, most heavy metal mining firms have silver, lead, zinc operations; these are a very common mixture of ores.