21. The intermediate [Fe(SCN)(H,O)s]is of reactiobn the in detected [Co(NCSs)(NH:)5]with [Fe(H2O)%] in aqueous producce to medium [Co(H,O)%1 and [Fe(H2O)61*. The mechanism of the reaction is 1. Interchange dissociative Interchange associative Inner sphere electron transfer Outer sphere electron transfer 2. 3. 4.