Which of the following will exhibit maximum ionic conductivity?

K_{4} [F e (C N)_{6}]

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[C o (N H_{3})_{6}] C l_{3}

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[C u (N H_{3})_{4} C l_{2}]

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[N i (C O)_{4}]

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Solution

The correct option is A $K_{4} [F e (C N)_{6}]$
Ionic conductance increases with increasing the number of ions, produced after decomposition.
$\begin{matrix} Compound & No. of ions produced K_{4} [F e (C N)_{6}] & 5 [C o (N H_{3})_{6}] C l_{3} & 4 [C u (N H_{3})_{4}] C l_{2} & 3 [N i (C O)_{4}] & 0 \end{matrix}$
So here the compound with maximum ionic conductivity is $K_{4} [F e (C N)_{6}]$

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