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Which of the following specie does NOT have `d^10 or d^0` configuration of metal ion
A. |
[Cu(NCC`H_3)_4]BF_4` |
B. |
`(NH_4)_2[TiCl_6]` |
C. |
`MnO_4^(2-)` |
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D. |
`CrO_4^(2-)` |