Question
A coordination compound with the molecular formula $\ce{CrCl_3.4H_2O}$ precipitates $\ce{AgCl}$ with $\ce{AgNO_3}$ solution. Its molar conductivity is found to be equivalent to two ions. What is the structural formula and name of the compound?
$\ce{[Co(NH_3)_3Cl_3], [Co(NH_3)_5Cl]Cl_2 , [Co(NH_3)_6]Cl_3 , [Co(NH_3)_4Cl_2]Cl}$

Answer

$\ce{[O(NH_3)_3Cl_3] < [Co(NH_3)_4Cl_2]Cl < [Co(NH_3)_5Cl]Cl_2 < [Co(NH_3)_6]Cl_3}$

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