Which of the following is paramagnetic i

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Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: Coordination Compounds

Question:

Which of the following is paramagnetic in nature?

Options:

[Ni(CN)₄]^2-

[Ni(Cl)₄]^2-

[Fe(CN)₆]^4-

[Ni(CO)4]

Correct Answer:

[Ni(Cl)₄]^2-

Explanation:

[Ni(Cl)₄]^2-is tetrahedral and paramagnetic in nature.

x + 4(-1) = -2

x - 4 = -2

x = -2 + 4 = 2

Ni²⁺: [Ar]3d⁸

As Cl^- is a weak field ligand, it could not pair up the 3d-electrons. Hence, the compound is paramagnetic in nature.