1.

The pair o f ions configuration is ....

Answer»

`Cr^(3+), Fe^(3+)`
`Fe^(3+), Mn^(2)`
`Fe^(3+), Co^(3+)`
`Sc^(3+), Cr^(3+)`

SOLUTION :
So, `Fe^(3+) and Mn^(2+)`have the same ELECTRONIC configureation.


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