Which of the following complex has square planar structure

Options

(a) Ni(CO₄)
(b) [Ni(CN)₄]²⁻
(c) [Ni(Cl)₄]²⁻
(d) [Zn(NH₃)₄]²⁺

Correct Answer:

[Ni(CN)₄]²⁻

Explanation:

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