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TS EAMCET · Chemistry · Coordination Compounds

Which one of following complex has the highest magnitude of crystal fíeld splítting energy \(\left(\Delta_0\right)\) ?

  1. A \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}\)
  2. B \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}\)
  3. C \(\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^3\)
  4. D \(\left[\mathrm{CoF}_6\right]^3\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}\)

Step-by-step Solution

Detailed explanation

The crystal field splitting, i.e. \(\Delta_0\), depends upon the field produced by the ligand and charge on the metal ion. So, ligands can be arranged in a series in the order of increasing field strength. This series is known as spectrochemical series. e.g.,…