Question
Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present?

Answer

Selonium, tellurium, silver, gold and platinum are the elements present in the anode mud in electrolytic refining of copper.
These elements are less reactive than copper, hence does not participate in electrolytic refining process.
Hence, they settle down below the anode as anode mud.

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