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The d-electron configurations of Cr^(2+)...

The d-electron configurations of `Cr^(2+), Mn^(2+), Fe^(2+)` and `Co^(2+)` are `d^4, d^5, d^6` and `d^7` respectively. Which one of the following will exhibit minimum paramagnetic behavious?

A

`"["Mn(H_(2)O)_(6)"]"^(2-)`

B

`"["Fe(H_(2)O)_(6)"]"^(2+)`

C

`"["Co(H_(2)O)_(6)"]"^(2+)`

D

`"["Cr(H_(2)O)_(6)"]"^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
C
`[Mn(H_(2)O)]^(2),Mn^(2+)=3d^(5)`

Minimum paramagnetic character is shown by `[Co(H_(2)O)_(6)]^(2+)`
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