NEET Chemistry Isomerism in Complexes MCQ Question
Consider an octahedral complex of the form [Ma3b3] where ligands a and b are different. If three identical ligands occupy positions at the corners of one octahedral face, what type of isomer is this?
Facial (fac) isomer
Meridional (mer) isomer
Linkage isomer
Ionisation isomer
Correct Answer
Detailed Explanation
In octahedral complexes of the type [Ma3b3], when three identical ligands occupy adjacent positions at the corners of an octahedral face, the isomer is termed a facial (fac) isomer. This is based on the description of geometrical isomerism in the NCERT context.
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