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How may structural isomers are possible are possible for a complex consisting of `Co^(3+)` as the central metal ion, two en molecules, two `CI^(-)` ions one `NO_(2)^(-)` ion ?A. FourB. ThreeC. FiveD. Two

Answer» Correct Answer - B
Keeping in mind that the coordination number of `Co^(3+)` ion is six, we have following possibilities:
`[CoCI_(2)(en)_(2)]NO_(2)`
`[CoCI_(2)(en)+(2)NO_(2)]CI`
`[CoCI_(2)(en)_(2)(ONO)]CI`
Therefore only ionization and linkage isomerism are possble. Hydrate isomersm is not possible as there is no `H_(2)O` molecule. Coordination isomerism is also not possible as both positive and negative ions are complex ions.


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