What is the hybridization of the central metal ion in the complex [Ni(CO)4]?

What is the hybridization of the central metal ion in the complex [Ni(CO)4]?

Step 1: Identify the central metal ion in the complex [Ni(CO)4]. The central metal ion is nickel (Ni).
Step 2: Determine the oxidation state of nickel in the complex. In [Ni(CO)4], CO is a neutral ligand, so nickel is in the +0 oxidation state.
Step 3: Count the number of ligands attached to the central metal ion. There are four CO ligands attached to nickel.
Step 4: Determine the hybridization based on the number of ligands. Since there are four ligands, the hybridization is sp3.
Step 5: Conclude that the central metal ion (Ni) uses sp3 hybridization to form four equivalent bonds with the CO ligands.

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