MHT CET 2023 Chemistry question

Identify anionic complex from following

(A)Pentaamminequcobalt (III) iodide
(B)Pentaamminecarbonatocobalt (III) chloride
(C)Tetracyanonickelate (II) ionCorrect
(D)Triamminetrinitrocobalt (III)

Answer: (C)

Solution

In IUPAC naming, a complex anion has the suffix '-ate' after the metal name, a cationic complex keeps the plain metal name, and a neutral complex also keeps the plain name. (c) Tetracyanonickelate(II) ion is , a complex

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Question ID VK-096367