Werner's Theory of Coordination Compounds

Nickel $(\mathrm{Z} = 28)$ combines with a uninegative monodentate ligand ${\mathrm{X}}^{-}$ to form a paramagnetic complex $[{\mathrm{NiX}}_4{]}^{2–}$. The number of unpaired electron/s in nickel and geometry of this complex ion are respectively _____.

${\mathrm{PtCl}}_4.5{\mathrm{H}}_2\mathrm{O}$ have three isomers. Complex $\left(\mathrm{A}\right)$ does not react with concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4,$ whereas complexes $\left(\mathrm{B}\right) \mathrm{and} \left(\mathrm{C}\right)$ lose $4.21\%$ and $8.42\%$ of their original weight, respectively, on treatment with concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4.$ Which is incorrect statement about the complexes.

Molar mass of the complex is $427 \mathrm{u}$.

Which of the following is most easily reduced?

The ammonium iron $\left(\mathrm{II}\right)$ sulphate compound is also named as _____.

How does coordination compounds formed?

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, ${\mathrm{K}}_3\left[\mathrm{Fe}\right(\mathrm{CN}{)}_6]$.

$\mathrm{EAN}$ 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)]

The IUPAC name of the complex$\left[\mathrm{Pt}\right({\mathrm{NH}}_3{)}_3\mathrm{Br}\left({\mathrm{NO}}_2\right)\mathrm{Cl}]\mathrm{Cl}$is

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.