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COMEDK · Chemistry · 24. Coordination Compounds

Which one of the following Coordination entities exhibits Facial and Meridional isomerism?

  1. A \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_3\left(\mathrm{NO}_2\right)_3\right]\)
  2. B \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Br}_2\right] \mathrm{NO}_3\)
  3. C \(\left[\mathrm{Co}(\text { en })_2 \mathrm{Cl}_2\right]^{+}\)
  4. D \(\left[\mathrm{Co}(\text { en })_3\right] \mathrm{Cl}_3\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_3\left(\mathrm{NO}_2\right)_3\right]\)

Step-by-step Solution

Detailed explanation

Facial (fac) and Meridional (mer) isomerism is a type of geometric isomerism observed in octahedral complexes of the type \([MA_3B_3]\). In the complex \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_3\left(\mathrm{NO}_2\right)_3\right]\), the central metal ion Co is…