In the coordination entity [Co(NH3)3(NO2)3], if all three N atoms

Question

In the coordination entity [Co(NH3)3(NO2)3], if all three N atoms of the amine ligands occupy adjacent positions at the corners of an octahedral face, the geometrical isomer formed is known as _______ isomer. A. cis B. trans C. fac D. mer I had been asked this question by my school principal while I was bunking the class. Asked question is from Isomerism in Coordination Compounds topic in division Coordination Compounds of Chemistry – Class 12

fahmy · Accepted Answer

The correct choice is C. fac Explanation: Octahedral entities of the type [MA3B3] form two types of isomers based on whether the same ligand groups occupy adjacent positions on the octahedral face (fac) or positions around the meridian of the octahedron (mer).