Complex with meridional geometrical isomer

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Question

Which complex has ligands arranged in a meridional configuration as one of its geometrical isomers?

Choose one · Correct answer highlighted

[Co(NH₃)3Cl₃] Correct [Co(NH₃)4Cl₂]+ [Ni(NH₃)4]2+ [Fe(CN)6]4−

[Co(NH₃)3Cl₃] (octahedral, [Ma₃b3]) can have a meridional (mer) isomer where 3 Cl− ligands are in a plane.

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