Which of the following will exhibit maximum ionic conductivity?

Which of the following will exhibit maximum ionic conductivity?
  1. $\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}ight]$
  2. $\left[\mathrm{Co}\left(\mathrm{NH}_{3}ight)_{6}ight] \mathrm{Cl}_{3}$
  3. $\left[\mathrm{Cu}\left(\mathrm{NH}_{3}ight)_{4} \mathrm{Cl}_{2}ight]$
  4. $\left[\mathrm{Ni}(\mathrm{CO})_{4}ight]$

Solution

$\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}ight]$ in solution furnishes $4 \mathrm{~K}^{+}+$
$\left[\mathrm{Fe}(\mathrm{CN})_{6}ight]^{4}$ five ions and exhibits maximum ionic conductivity. *

Asked in: JEE-TOPICTESTS-CHEMISTRY

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