Which of the following complex species is
Question:

Which of the following complex species is not expected to exhibit optical isomerism ?

  1. $\left[\mathrm{Co}(\mathrm{en})_{3}\right]^{3+}$

  2. $\left[\mathrm{Co}(\mathrm{en})_{2} \mathrm{Cl}_{2}\right]^{+}$

  3. $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}_{3}\right]$

  4. $\left[\mathrm{Co}(\mathrm{en})\left(\mathrm{NH}_{3}\right)_{2} \mathrm{Cl}_{2}\right]^{+}$


Correct Option:

Solution:

Solution not required

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