The electrode kinetics of anomalous codeposition of iron group metals is interpreted by queuing theory applied to the recently proposed Zech-Podlaha-Landolt model which postulates an adsorbed mixed-metal species existing temporarily as an electrochemically activated complex. The complex acts as an intermediate in a consecutive reaction leading to enhanced deposition of the more electronegative metal. Numerical illustrations for the codeposition of iron and nickel, and cobalt and nickel from a sulphate electrolyte are provided.