Which one of the following pairs of ions have the same electronic configuration?A. `Cr^(3+), Fe^(3+)`B. `Fe^(3+), Mn^(2+)`C. `Fe^(3+),Co^(3+)`D. `Sc^(3+),Cr^(3+)`

Which one of the following pairs of ions have the same electronic conf

1.	Which one of the following pairs of ions have the same electronic configuration?A. `Cr^(3+), Fe^(3+)`B. `Fe^(3+), Mn^(2+)`C. `Fe^(3+),Co^(3+)`D. `Sc^(3+),Cr^(3+)`
Answer» Correct Answer - B `{:(._(24)Cr=[Ar]3d^(5)4s^(1),._(24)Cr^(3+)=[Ar]3d^(3)),(._(26)Fe=[Ar]3d^(6)4s^(1),._(26)Fe^(3+)=[Ar]3d^(5)),(._(25)Mn=[Ar]3d^(5)4s^(2),._(25)Mn^(2+)=[Ar]3d^(5)),(._(27)Co=[Ar]3d^(7)4s^(2),._(27)Co^(3+)=[Ar]3d^(6)),(._(21)Sc=[Ar]3d^(1)4s^(2),._(21)Sc^(3+)=[Ar]):}`

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Which one of the following pairs of ions have the same electronic configuration?A. `Cr^(3+), Fe^(3+)`B. `Fe^(3+), Mn^(2+)`C. `Fe^(3+),Co^(3+)`D. `Sc^(3+),Cr^(3+)`

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