Question

What is the oxidation state of Nickel in \(Ni(CO)_4\)?

• A. \(+2\)
• B. \(+1\)
• C. \(0\)
• D. \(-2\)

Hint:

Carbon monoxide (\(CO\)) is a neutral ligand. When all ligands are neutral and the complex has no overall charge, the metal oxidation state is \(0\).

Answer 1

The Correct Option is C

Concept: The oxidation state of the central metal atom in a coordination compound depends on the charges of the ligands and the overall charge of the complex. Carbon monoxide (\(CO\)) is a neutral ligand, meaning it contributes no charge.

Step 1: Write the charge balance equation. Let the oxidation state of Nickel be \(x\). \[ x + 4(0) = 0 \] since each \(CO\) ligand has zero charge and the complex is neutral.

Step 2: Solve for \(x\). \[ x = 0 \] Thus, the oxidation state of Nickel is 0.