MHT CET 2025 Chemistry question

Which from following complexes contains anionic ligand?

(A)Tetraamminecopper (II) ion
(B)Pentaammineaquacobalt (III) iodide
(C)Tetracyanonickelate (II) ionCorrect
(D)Pentacarbonyliron (0)

Answer: (C)

Solution

A ligand is the species directly bonded to the central metal ion through coordinate bonds. In (A) the ligand is neutral. In (B) the ligands and are neutral; iodide is only the counter ion outside the

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Question ID VK-103255