alleryIn the octahedral complex [Co(NH₃)₃(NO₂)₃], the two geometrical isomers are called:
Afacial (fac) and meridional (mer)
Bcis and trans
Cd and l
Ddextro and laevo
Answer & Solution
Correct answer: A. facial (fac) and meridional (mer)
For octahedral M_a₃b₃ complexes: **fac-** isomer = three of the same ligand occupy adjacent corners of an octahedral face
**mer-** = three of the same ligand around the meridian of the octahedron.
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