[johndeer108]

Mn, Fe, and Co in the +2 and +3 oxidation states all form octahedral complexes with H2O ligands. Among the +3 complexes, electrochemistry experimental measurements indicate that the Fe+3 complex is the most difficult to reduce by one electron. Briefly explain this result.

[Borek]

You have to show your attempts at solving the question to receive help. This is a forum policy, described in the forum rules.