Coordination Compounds - Inorganic Chemistry PYQ

What is coordination number of the metal in \(\mathrm{{[Co{(en)_2}C{l_2}]^{2 + }}}\) ?

Potassium cyanide is made alkaline with NaOH and boiled with thiosulphate ions. The solution is cooled and acidified with HCl and this solution with iron (III) chloride produces

\(\mathrm{AlF}_3\) is soluble in HF only in the presence of KF due to formation of

Which of the following complexes formed by nickel is tetrahedral and paramagnetic?

The crystal field theory is successful in explaining which of the following?

I. Ligands as point charges.

II. Formation and structures of complexes.

III. Colour.

IV. Magnetic properties.

V. Covalent character of metal-ligand bonding.

Which of the following is correct related to the colours of \(\mathrm{TiCl}_3(X)\) and \(\left[\mathrm{Ti}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3(Y)\) ?

An element '\(X\)' with the atomic number 13 forms a complex of the type \([\mathrm{XCl}(\mathrm{H}_2 \mathrm{O})_5]^{2+}\). The covalency and oxidation state of \(X\) in it are respectively

Identify the species, which does not exist?

The homoleptic complex in the following is

Arrange the following in the increasing order of number of unpaired electrons present in the central metal ion

I. $\left[\mathrm{MnCl}_6\right]^{3-}$

II. $\left[\mathrm{FeF}_6\right]^{3-}$

III. $\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}$

IV. $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$

How many of the following ligands are stronger than

$$\begin{aligned} & \mathrm{H}_2 \mathrm{O} \text { ? } \\ & \mathrm{S}^{2-}, \mathrm{Br}^{-}, \mathrm{C}_2 \mathrm{O}_4^{2-}, \mathrm{CN}^{-} \text {, en, } \mathrm{NH}_3, \mathrm{CO}, \mathrm{OH}^{-} \\ & \begin{array}{ll} \text { } & \text { } \end{array} \end{aligned}$$

Improve silver ore $+\mathrm{CN}^{-}+\mathrm{H}_2 \mathrm{O} \xrightarrow{\mathrm{O}_2}[\mathrm{X}]^{-}+\mathrm{OH}^{-}$

$$[X]^{-}+\mathrm{Zn} \longrightarrow[Y]^{2-}+\mathrm{Ag} \text { (pure) }$$

The co-ordination numbers of the metals in $[X]$. [ $Y$ ] are respectively

Match the complexes in List-I with their hybridisation in list-II.

Arrange the following in the increasing order of their magnetic moments

I. $\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}$

II. $\left[\mathrm{Mn} \mathrm{Cl}_6\right]^{3-}$

III. $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$

IV. $\left[\mathrm{FeF}_6\right]^{3-}$

Which of the following complexes exhibit geometrical isomerism?

I. $\left[\mathrm{Co}(\mathrm{en})\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right] \mathrm{Cl}$

II. $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right] \mathrm{Cl}$

III. $\left[\mathrm{Co}(\mathrm{en})_3, \mathrm{Cl}_3\right.$

IV. $\left[\mathrm{Co}(\mathrm{en})_2 \mathrm{Cl}_2\right] \mathrm{Br}$

In $\mathrm{Fe}_x\left[\mathrm{Fe}_y(\mathrm{CN})_6\right]_3, x, y$ respectively, are