COMEDK2022ChemistryCoordination Compounds

The oxidation state of nickel in [ Ni ( CO ₄ ) ] is

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Correct answer

D. 0

Step-by-step solution

The complex is [ Ni ( CO )₄ ] . The ligand CO (carbonyl) is a neutral ligand with an oxidation state of 0 . Let the oxidation state of nickel be x . The sum of the oxidation states of all atoms in a neutral complex is equal to 0 . x + 4 (0) = 0 x = 0 . Answer: 0

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