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JEE Main20199 Jan 2019Evening ShiftChemistryCoordination CompoundsActual

The complex that has highest crystal field splitting energy ∆ , is:

Options

  1. AK 3 C o C N 6
  2. BC o N H 3 5 C l C l 2
  3. CC o N H 3 5 H 2 O C l 3
  4. DK 2 C o C l 4

Correct answer

A. K 3 C o C N 6

Step-by-step solution

Strong field ligands have more C F S E value while weak field ligand have less C F S E value. C N - is strongest ligand among all so K 3 Co CN 6   has maximum C F S E value.

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