Question:

The ligand called p acid is

Updated On: Aug 15, 2022
  • $CO$
  • $NH_3$
  • $C _{2} O _{4}^{2-}$
  • ethylene diamine
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The Correct Option is A

Solution and Explanation

Carbon monoxide is $\pi$ - acid ligand as it characterises both metal to carbon and carbon to metal bonding. The latter is known as $\pi $-acidic character.
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Concepts Used:

Coordination Compounds

A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.

Coordination entity:

A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.

Ligands:

A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.