Why is the cr2+ reducing and mn3+ oxidising in nature wgen both have d4 configuration?
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Cr2+ is reducing as its configuration changes from d 4 to d 3 , the latter having a half-filled t2g level .
On the other hand, the change from Mn3+ to Mn2+ results in the half-filled (d 5 ) configuration which has extra stability
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It has a d4configuration. While acting as a reducing agent, it gets oxidized to Cr3+ (electronic configuration, d3).
This d3configuration can be written as t32g configuration, which is a more stable configuration. In the case ofMn3+ (d4), it acts as an oxidizingagent and gets reduced to Mn2+ (d5).
This d3configuration can be written as t32g configuration, which is a more stable configuration. In the case ofMn3+ (d4), it acts as an oxidizingagent and gets reduced to Mn2+ (d5).
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