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Why Cr2+ is reducing agent and Mn3+ an oxidizing agent although both have d4 configuration?

Asked by Topperlearning User 26th June 2014, 1:27 PM
Answered by Expert

Cr2+ is reducing agent as its configuration changes from d4 to d3, when it is oxidized to Cr3+ .The d3 configuration have a half-filled t2g level which is very stable. On the other hand, the reduction of Mn3+ to Mn2+ results in the half-filled (d5) configuration which has extra stability hence Mn3+ acts as oxidizing agent.



Answered by Expert 26th June 2014, 3:27 PM
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