Q.59 Which of the following is non-conducting?

(A)COCl.3NH3 (B)COCl3.5NH3 (C) COCl3.4NH3 (D)COCl3.3NH3

The option A is incorrect as the coordination number 6 for Co could not achieve here to compare.
Amongst B C and D - D is non conducting
Conduction is due to the presence of free ions out side the coordination sphere. Here in each case we can calculate the free ions.
In B total 8 ligands out of which 6 will go inside the coordination sphere and 2 would be in form of ions.
In C total 7 ​ligands out of which 6 will go inside the coordination sphere and 1 would be in form of ions.
In D total 6 ligands out of which 6 will go inside the coordination sphere and 0 would be in form of ions.

 

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