Which of the following is wrongly matched

Which of the following is wrongly matched

Options

(a) [Cu(NH₃)₄]²⁺ – square planar
(b) [Ni(CO)₄] – neutral ligand
(c) [Fe(CN)₆³⁻ – sp³d²
(d) [Co(en)₃]³⁺ – follows EAN rule

Correct Answer:

[Fe(CN)₆³⁻ – sp³d²

Explanation:

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