A) \[{{K}_{4}}[Fe{{(CN)}_{6}}]\]
B) \[[CO{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}\]
C) \[[Cu{{(N{{H}_{3}})}_{4}}]3C{{l}_{2}}\]
D) \[[Ni{{(CO)}_{4}}]\]
Correct Answer: A
Solution :
Compounds having larger number of ions after decomposition will show the maximum conductivity. \[{{K}_{4}}[Fe{{(CN)}_{6}}]\] gives maximum number of ions. So, it shows maximum conductivity. \[[Co{{(N{{H}_{3}})}_{6}}]\,C{{l}_{3}}\xrightarrow[{}]{{}}\underbrace{{{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}+3C{{l}^{-}}}_{=\,Four\,ions}\] \[{{K}_{4}}[Fe{{(CN)}_{6}}]\xrightarrow[{}]{{}}\underbrace{4{{K}^{+}}+{{[Fe{{(CN)}_{6}}]}^{4-}}}_{=Five\,ions}\] \[[Cu{{(N{{H}_{3}})}_{4}}]C{{l}_{2}}\xrightarrow[{}]{{}}\underbrace{{{[Cu{{(N{{H}_{3}})}_{4}}]}^{2+}}+2C{{l}^{-}}}_{=Three\,ions}\] \[Ni{{(CO)}_{4}}\xrightarrow[{}]{{}}No\,ions\]
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