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Q.
Fac, mer isomerism is associated with which of the following general formula ?
Coordination Compounds
Solution:
The compounds of the formula $\left[ MA _{3} B _{3}\right]$ exhibit fac and mer isomerism.
The fac isomer is also known as facial isomer or cis isomer.
Three $A$ ligands are present on one triangular face and three $B$ ligands are present on opposite triangular face.
The mer isomer is also known as meridional isomer or trans isomer.
