Which of the following complexes exhibits fou | vedclass

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(A) The complex $[Co(en)(NH_3)_2Cl_2]Cl$ has the formula $[M(AA)(a)_2(b)_2]$.This complex exists as geometric isomers (cis and trans).For the cis-isom

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$[Co(en)(NH_3)_2Cl_2]Cl$

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(A) The complex $[Co(en)(NH_3)_2Cl_2]Cl$ has the formula $[M(AA)(a)_2(b)_2]$.This complex exists as geometric isomers (cis and trans).For the cis-isomer,it can further exist as optical isomers (d and l forms).Thus,the cis-isomer has two optical isomers,and the trans-isomer is achiral.However,considering the specific coordination sphere $[Co(en)(NH_3)_2Cl_2]^+$,it exhibits geometric isomerism (cis and trans) and the cis-form is optically active,leading to a total of $4$ isomers (cis-d,cis-l,trans-d,trans-l is not correct,rather it is cis-d,cis-l,trans-isomer,and another geometric arrangement).Actually,for $[M(AA)(a)_2(b)_2]$,the cis-form is optically active ($2$ isomers) and the trans-form is optically inactive ($1$ isomer),but with different ligands,the count varies.$[Co(en)(NH_3)_2Cl_2]^+$ specifically allows for $4$ isomers: $cis-trans$ arrangements and optical activity.

Which of the following complexes exhibits four isomers?

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