Medium MCQ +4 / -1 PYQ · JEE Mains 2022

Low oxidation state of metals in their complexes are common when ligands :

  1. A have good $\pi$-accepting character Correct answer
  2. B have good $\sigma$-donor character
  3. C are having good $\pi$-donating ability
  4. D are having poor $\sigma$-donating ability

Solution

Ligands like : CO, are sigma donor and $\pi$-acceptor and they make stronger bond with lower oxidation state metal ion, in this case back bonding is more effective

About this question

Subject: Chemistry · Chapter: Coordination Compounds · Topic: Ligands and Coordination Number

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