A solution of ` [Co(NH_3) _4 I_2 ]Cl` when treated with `AgNO_3` gives a white precipitate What should be the formula of isomer of the dissolved complex that gives yellow precipitate with `AgNO_3` What are the above isomers called?

Explanation

(i). The isomer that give yellow precipitate is ` [Co(NH_3)_4Cl_2]I_2`
(ii) `[Co(NH_3)_4I_2]Cl_2 ` and ` [Co(NH_3)_4 Cl_2 ]I_2` are ionisation isomers [Note questions is wrong since the complex is given as ` [Co(NH_3)_4I_2]Cl.]`