What about fac and mer, can they show optical isomerism? Why/why not?

For MLa3Lb3, two isomers are possible - a facial isomer (fac) where the three identical ligands are mutually cis, and a meridional isomer (mer) where the three ligands are coplanar. they show optical isomerism because they rotate plane of polarised light.


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fac means facial isomer and mer means meridional isomer. these are the isomers shown by coordination compounds. they can show optical isomerism bcoz they are of MA3B3 type

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