Multiple choice The electron transfer from [Fe(H2O)6]2+ to [Fe(H2O)6]3+ is likely to occur via. d-d transition inner sphere electron transfer SN1 mechanism Outer sphere electron transfer None of these Reveal answer Fill a bubble to check yourself D Correct answer Explanation This option is correct because in redox reaction, an electron transfer occur through the intact coordination shell of the metal ion. This redox reaction may occur self exchange electron to homonuclear species.