Question

Oxidation no. Of metals in [Fe(CN)6]^4-

Answer 1

the groups ferrocyanide have the charge -4, given from 6 ions CN− with charge -1 and a atom of iron with charge +2. Each [Fe(Fe(CN)6)] is then a −1 , so with each [Fe(CN)6]4− being a 4− charge, the bolded iron is a +3