Medium MCQ +4 / -1 PYQ · JEE Mains 2021

Indicate the complex/complex ion which did not show any geometrical isomerism :

  1. A [CoCl<sub>2</sub>(en)<sub>2</sub>]
  2. B [Co(CN)<sub>5</sub>(NC)]<sup>3$-$</sup> Correct answer
  3. C [Co(NH<sub>3</sub>)<sub>3</sub>(NO<sub>2</sub>)<sub>3</sub>]
  4. D [Co(NH<sub>3</sub>)<sub>4</sub>Cl<sub>2</sub>]<sup>+</sup>

Solution

(a) [CoCl<sub>2</sub>(en)<sub>2</sub>] show Cis-trans isomerism<br><br>(b) [Co(CN)<sub>5</sub>(NC)]<sup>3$-$</sup> can't show G.I.<br><br>(3) [Co(NH<sub>3</sub>)<sub>3</sub>(NO<sub>2</sub>)<sub>3</sub>] show fac &amp; mer isomerism<br><br>(d) [Co(NH<sub>3</sub>)<sub>4</sub>Cl<sub>2</sub>]<sup>+</sup> show cis &amp; trans isomerism

About this question

Subject: Chemistry · Chapter: Coordination Compounds · Topic: Ligands and Coordination Number

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