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CBSE Class 12-science Answered

Why Cr2+ is reducing agent and Mn3+ an oxidizing agent although both have d4 configuration?
Asked by Topperlearning User | 26 Jun, 2014, 01:27: PM
answered-by-expert Expert Answer

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 | 26 Jun, 2014, 03:27: PM
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