Question
Sat January 21, 2012 By: Kanwal Sandhu

why Cr2+ is a better reducing agent than Fe2+ when Cr2+ has electronic configuration 3d4 i.e can easily gain one electron to have stable 3d5 electrnic configuration and hence should be a good oxidising agent.

Expert Reply
Sun January 22, 2012
Cr2+ is a stronger reducing agent because it can lose one of its electron to become Cr3+ in which the t2g level of d-orbital is half filled and eg level is empty.
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