Coordination CompoundHardBloom L3

Question

The complex ion which has no 'd' electrons in the central metal atom is

Options

A.[MnO₄]^–

B.[Co(NH₃)₆]³⁺

C.[Fe(CN)₆]^3–

D.[Cr(H₂O)₆]³⁺

Solution

Sol. In [MnO₄]^– ⇒ Mn⁺⁷ = 4s⁰3d⁰ ⇒ no d electron

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