Which of the following complexes will have four isomers ?A. `[Co(en)_(3)]CI_(3)`B. `[Co(en)_(2)CI_(2)]CI`C. `[Co(PPh_(3))_(2)(NH_(3))CI_(2)]CI`D. `[Co(PPh_(3))_(3)CI]CI_(2)`

Which of the following complexes will have four isomers ?A. `[Co(en)_(

1.	Which of the following complexes will have four isomers ?A. `[Co(en)_(3)]CI_(3)`B. `[Co(en)_(2)CI_(2)]CI`C. `[Co(PPh_(3))_(2)(NH_(3))CI_(2)]CI`D. `[Co(PPh_(3))_(3)CI]CI_(2)`
Answer» Correct Answer - B Complex (1) exhibits optical isomerism and thus exits in two enantomeris form. Complex exhibits geometrical as well as optical isomerism. The cis - form is optically active. Thus, there are three isome: `(+)` - cis, `(-)` - cis and trans - form. Complex (3) being squar planar exhibits only geomertrical isomerism. Thus, it exists in two forms: cis- and trans. Complex (4) exhibits no isomerism. Thus, the maximum no. of isomers are of complex (2).

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Which of the following complexes will have four isomers ?A. `[Co(en)_(3)]CI_(3)`B. `[Co(en)_(2)CI_(2)]CI`C. `[Co(PPh_(3))_(2)(NH_(3))CI_(2)]CI`D. `[Co(PPh_(3))_(3)CI]CI_(2)`

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