The complex that can show f a c - and m e r -isomers is:

1. ${\left[\mathrm{C}\mathrm{o}{\left(\mathrm{N}{\mathrm{H}}_3\right)}_4\mathrm{C}{\mathrm{l}}_2\right]}^{+}$
2. $\left[\mathrm{P}\mathrm{t}{\left(\mathrm{N}{\mathrm{H}}_3\right)}_2\mathrm{C}{\mathrm{l}}_2\right]$
3. $\left[\mathrm{C}\mathrm{o}\mathrm{C}{\mathrm{l}}_2{\left(\mathrm{e}\mathrm{n}\right)}_2\right]$
4. $\left[\mathrm{C}\mathrm{o}{\left(\mathrm{N}{\mathrm{H}}_3\right)}_3{\left(\mathrm{N}{\mathrm{O}}_2\right)}_3\right]$

Solution

$\left[M{a}_3{b}_3\right]$ type complex shows facial and meridional isomerism.

  

Asked in: JEE Main 2020 (08 Jan Shift 1)

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