The homoleptic complex in the following is

The homoleptic complex in the following is
  1. $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Br}_2\right]^{\oplus}$
  2. $\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)\left(\mathrm{NH}_3\right)_4\right]^{\oplus}$
  3. $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3 \oplus}$
  4. $\left[\mathrm{Co}(\mathrm{CN})_4 \mathrm{Cl}_2\right]^{\ominus}$

Solution

Homoleptic complexes are the complexes in which all the ligands attached to central metal atom/ion are same or identical: $\left.\therefore \mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ is a homoleptic complex whereas other complexes are not.

Asked in: AP EAMCET 2022 (05 Jul Shift 1)

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