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.

Asked by kanwal sandhu | 21st Jan, 2012, 08:17: PM

Expert Answer:

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.

Answered by  | 22nd Jan, 2012, 10:52: AM

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