Coordination Compounds - Inorganic Chemistry - Chemistry Previous Year Questions

Among the given complexes the possess " $\mathrm{CO}^{\prime \prime}$ as a bridged ligands are

I. $\left[\mathrm{Co}_2(\mathrm{CO})_8\right]$

II. $\left[\mathrm{Fe}_3(\mathrm{CO})_{12}\right]$

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

IV. $\left[\mathrm{Fe}_2(\mathrm{CO})_9\right]$

The correct order of decreasing field strength of the below given ligands is

Identify the incorrect match from the following.

Identify the correct set for $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ ion.

(Hybridisation of $\mathrm{Co}^{3+}$, type of complex, number of unpaired electrons in the complex ion respectively.)

• According to Werner's theory, the number of groups bonded to the central metal atom/ion in a coordination complex represent.

The sum of oxidation state and co-ordination number of central metal atom is maximum with respect to which of the following complex?

$$\text { Match the following. }$$

$$\begin{array}{llll} \hline & \begin{array}{l} \text { List-I } \\ (\text { Complex }) \end{array} & & \begin{array}{l} \text { List-II } \\ \text { (Spin only magnetic } \\ \text { moment) } \end{array} \\ \hline \text { A. } & {\left[\mathrm{CoF}_6\right]^{3-}} & \text { I. } & 0 \\ \hline \text { B. } & {\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}} & \text { II. } & \sqrt{24} \\ \hline \text { C. } & {\left[\mathrm{FeF}_6\right]^{3-}} & \text { III. } & \sqrt{8} \\ \hline \text { D. } & {\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-}} & \text { IV. } & \sqrt{35} \\ \hline & & \text { V. } & \sqrt{15} \\ \hline \end{array}$$

The correct answer is

The correct match for complex with its magnetic behaviour in the following is

Which of the following molecules is colourless?

$A^{2+}, B^{2+}$ and $C^{-}$form an ionic complex like $A_{x-2}\left[B(C)_x\right]_2$. If the complex is $75 \%$ dissociated in a solvent with $i=4$, the coordination number of $B$ is

A metal complex absorbed orange light. The colour in which it appears is

Secondary valences of the following complexes based on their reactions with excess $\mathrm{AgNO}_3$ are

$$\text { Match the following }$$

$$\text { The correct match }$$

The pair in which both the species have same magnetic moment (spin only) is

Which of the following correctly represents the order of ligands in spectrochemical series?

Coordination number of Fe in the complexes $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-},\left(\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$ and $\left[\mathrm{FeCl}_4\right]^{-}$would be respectively

Among the following Cr(III) complexes, which one will have the highest octahedral crystal field splitting?

When $\left[\mathrm{Ti}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3$ is heated at $250^{\circ} \mathrm{C}$, the change in colour is from

Which compound is zero valent metal complex?