MHT CET 2023 Chemistry question

Which coordination complex from following contains netural ligand?

(A)Pentacarbonyl iron (o)Correct
(B)trioxalatocobaltate (III) ion
(C)Sodium hexanitrocobaltate (III)
(D)Tetracyanonickelate (II) ion

Answer: (A)

Solution

A neutral ligand carries no charge. In pentacarbonyl iron(0), , the ligand is carbonyl, CO, which is neutral (the complex itself is neutral, Fe in oxidation state 0). Option (b) has oxalate

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Question ID VK-098184