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The complex which has no d-electron in t...

The complex which has no d-electron in the central metal atom is .

A

`[MnO_(4)]`

B

`[Co(NH_(3))_(6)]^(3+)`

C

`[Co(NH_(3))_(6)]^(3+)`

D

`[Cr(H_(2)O)_(6)]^(3+)`

Text Solution

Verified by Experts

The correct Answer is:
a
Oxidation state of Mn in `[MnO_4]^(-)` is +7
Mn : `[Ar]3d^(5)4s^(2)`
`Mn^(7+)` : [Ar], d electrons = zero
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