State the importance of coordination compounds in electroplating.

(N/A) In electroplating,coordination compounds are used to ensure a smooth and uniform deposition of metal. For example,articles can be electroplated with silver and gold much more smoothly and evenly from solutions of the complexes $[Ag(CN)_{2}]^{-}$ and $[Au(CN)_{2}]^{-}$ than from a simple solution of metal ions.