Question

Which of the following complex's aqueous solution shows maximum conductance?

• A. $PtC{l}_{4.}6N{H}_3$
• B. $PtC{l}_{4.}5N{H}_3$
• C. $PtC{l}_{4.}4N{H}_3$
• D. $\text{Equal in all of the above}$

Answer 1

The correct option is A $PtC{l}_{4.}6N{H}_3$

Platinum has coordination number equal to six. The complexes are $\left[Pt\right(N{H}_3{)}_6\left]C{l}_{4,}\right[Pt\left(N{H}_3{)}_{5}Cl\right]C{l}_3\text{and}\left[Pt\right(N{H}_3{)}_{4}C{l}_2]C{l}_{2,}$ which indicates that the number of ions given on ionization (assuming $100\%$ ionization) would be $5,4\text{and}3$ respectively. Thus $\left[Pt\right(N{H}_3{)}_6]C{l}_4$ would have maximum ions on ionization and hence maximum conductance also.