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?

What is the correct Werner's representation of an anhydrous binary compound ${\mathrm{CoCl}}_3·4{\mathrm{H}}_2\mathrm{O}$?

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

In the metal carbonyls of the general formula $\mathrm{M}{\left(\mathrm{CO}\right)}_{\mathrm{x}}$ (Which follows EAN rule) if $\mathrm{M}$ is $\mathrm{Ni}, \mathrm{Fe}$ and $\mathrm{Cr}$ the value of $\mathrm{x}$ will be respectively:

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

If excess of ${\mathrm{AgNO}}_3$ solution is added to $100 \mathrm{mL}$ of a $0.024 \mathrm{M}$ solution of dichloro-bis (ethylene diamine) cobalt (III) chloride, how many mole of $\mathrm{AgCl}$ be precipitated ?

Which of the following complexes (Werner presentation) have minimum electrical conductance in aqueous solution?