Werner's Theory of Coordination Compounds

When $1$ mol ${\mathrm{CrCl}}_3$$.6{\mathrm{H}}_2\mathrm{O}$ is treated with excess of${\mathrm{AgNO}}_3, 3$ mol of$\mathrm{AgCl}$ are obtained. The formula of the complex is :

Which of the following obeys the $\mathrm{EAN}$ rule?

(a) $\left[\mathrm{Fe} {\mathrm{\eta }}^5-{\left({\mathrm{C}}_5{\mathrm{H}}_5\right)}_2\right] \mathrm{with} {\mathrm{Fe}}^{2+}$.

(b) $\left[\mathrm{Co}\left(\mathrm{NO}\right){\left(\mathrm{CO}\right)}_3\right] \mathrm{with} \mathrm{Co}°$.

(c) $\left[{\mathrm{Mn}}_2{\left(\mathrm{CO}\right)}_{10}\right] \mathrm{with} \mathrm{Mn}°$.

(d) $\left[\mathrm{V} {\left(\mathrm{CO}\right)}_6\right]{ }^{-}\mathrm{with} {\mathrm{V}}^{1-}$.

What is the effective atomic number of the metal atoms in ${\mathrm{Co}}_2(\mathrm{CO}{)}_8$?

According to Werner’s theory of valency, transition metals possess:

The effective atomic number of copper in $\left[\mathrm{Cu}\right({\mathrm{NH}}_3{)}_4{]}^{ 2+}$ is

Identify complex ion in which effective atomic number of the central metal ion is $35$. (Given Atomic number of $\mathrm{Co}=27, \mathrm{Fe}=26, \mathrm{Zn}=30$)

Calculate the effective atomic number (EAN) of the central metal atom in the compound, $\mathrm{Cr}(\mathrm{CO}{)}_6$.

Calculate the effective atomic number (EAN) of the central metal atom in the compound, ${\mathrm{K}}_3\left[\mathrm{Fe}\right(\mathrm{CN}{)}_6]$.

One mole of complex compound $\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5{\mathrm{Cl}}_3$ give $3$ moles of ions on dissolution in water. One mole of the same complex reacts with two moles of ${\mathrm{AgNO}}_3$ solution to yield two moles of $\mathrm{AgCl}\left(\mathrm{s}\right)$. The structure of the complex is 

$\mathrm{EAN}$ of iron in ${\mathrm{K}}_4\left[\mathrm{Fe}(\mathrm{CN}{)}_6\right]$ is

For next two question please follow the same

Complex compounds are molecular compounds which retain their identities even when dissolved in water. They do not give all the simple ions in solution but instead furnish complex ions. The complex compounds are often called co-ordination compounds because certain groups called ligands are attached to the central metal ion by co-ordinate or dative bonds. Co-ordination compounds exhibit isomerism, both structural and stereoisomerism. The structure, magnetic property, colour and electrical properties of complexes are explained by various theories.

Arrange the following compounds in order of their molar conductance :

(i) K[Co(NO₂)₄(NH₃)₂]
(ii) [Cr(ONO)₃(NH₃)₃]
(iii) [Cr(NO₂)(NH₃)₅]₃[Co(NO₂)₆]₂
(iv) Mg[Cr(NO₂)₅(NH₃)]

Oxidation number of $\mathrm{Co}$ in ${\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_3{\left({\mathrm{H}}_2\mathrm{O}\right)}_2\mathrm{Cl}\right]}^{+}$ is:

On the basis of Werner's theory explain, why cobalt amine complex, ${\mathrm{CoCl}}_{3}4{\mathrm{NH}}_3$ when treated with ${\mathrm{AgNO}}_3$ solution precipitates only one ${\mathrm{Cl}}^{-}$ ion even though there are three ${\mathrm{Cl}}^{-}$ ions.

The solutions of two compounds listed in Column-I when taken in molecular proportions give coordination compounds on evaporation. Match these compounds with their  relative properties which is/are listed in Column-II.

Among the given complex compounds EAN rule is not obeyed by 

Among the following complexes, the complex which can be reduced easily is :

 What will be the primary valency of cobalt in the complex $\left[\mathrm{Co}({\mathrm{NH}}_3{)}_5\mathrm{Cl}\right]{\mathrm{Cl}}_2$, according to Werner’s theory? 

Which of the following will not give test of chloride ions with ${\mathrm{AgNO}}_3$.