Coordination Compounds · Chemistry · TS EAMCET
MCQ (Single Correct Answer)
$$ \text { Observe the following complex ions } $$
$$ \begin{array}{cccc} \hline\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-} & {\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}} & {\left[\mathrm{CoF}_6\right]^{3-}} & {\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}} \\ \hline A & B & C & D \\ \hline \end{array} $$
Identify the option in which the unpaired electrons in the complex ions are in correct increasing order
Which one of the following complex ions is diamagnetic in nature?
Total number of geometrical isomers possible for the complexes $\left[\mathrm{NiCl}_4\right]^{2-}$, $\left[\mathrm{CoCl}_2\left(\mathrm{NH}_3\right)_4\right]^{+}$, $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_3\left(\mathrm{NO}_2\right)_3\right]$ and $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right]^{2+}$ is
Arrange the following complexes in the increasing order of their spin only magnetic moment (in B.M)
I. $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-}$
II. $\left[\mathrm{MnCl}_4\right]^{2-}$
III. $\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{4-}$
IV. $\left.\left[\mathrm{Cr}(\mathrm{NH})_3\right)_6\right]^{3+}$
When 100 mL of 0.2 M solution of $\mathrm{CoCl}_3 \cdot x \mathrm{NH}_3$ is treated with excess of $\mathrm{AgNO}_3$ solution, $3.6 \times 10^{22}$ ions are precipitated. The value of $x$ is $\left(N=6 \times 10^{23} \mathrm{~mol}^{-1}\right)$
Which one of the following is not an ambidenate ligand?
Arrange the following in increasing order of their crystal field splitting energy
I. $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$
II. $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$
III. $\left[\mathrm{Co}(\mathrm{CN})_{6}\right]^{3-}$
IV. $\left[\mathrm{CoF}_{6}\right]^{3-}$
$\mathrm{Pt}+3: 1$ mixture of $\left(\right.$ Conc. $\mathrm{HCl}+$ conc. $\left.\mathrm{HNO}_3\right) \rightarrow[\mathrm{X}]^{2-}$
What is the oxidation state of Pt in $[\mathrm{X}]^{2-}$ complex ion ?
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
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.
Identify the incorrect match from the following.
The correct answer is Table
$$ \text { Match the following } $$
| Column -I (Reaction) |
Column - II (Colour of the product or nature) | ||
|---|---|---|---|
| (A) | $\mathrm{FeCl}_3(\mathrm{aq})+\mathrm{NH}_3(\mathrm{aq}) \longrightarrow$ | (l) | Green ppt. |
| (B) | $\mathrm{AgCl}(\mathrm{aq})+\mathrm{NH}_3(\mathrm{aq}) \longrightarrow$ | (II) | Deep blue |
| (C) | $\mathrm{Cu}^{2+}(\mathrm{aq})+\mathrm{NH}_3(\mathrm{aq}) \longrightarrow$ | (III) | Brown ppt. |
| (IV) | Colourless | ||
$$ \text { The correct match } $$
Secondary valences of the following complexes based on their reactions with excess $\mathrm{AgNO}_3$ are
$$ \begin{array}{llc} \hline & \begin{array}{l} \text { Formula of the } \\ \text { complexes } \end{array} & \begin{array}{c} \text { Moles of } \mathrm{AgCl} \text { precipitated } \\ \text { per mole of complex } \end{array} \\ \hline \text { (I) } & \mathrm{CoCl}_3 \cdot 6 \mathrm{H}_2 \mathrm{O} & 3 \\ \hline \text { (II) } & \mathrm{NiCl}_3 \cdot 6 \mathrm{H}_2 \mathrm{O} & 2 \\ \hline \text { (III) } & \mathrm{Co}\left(\mathrm{SO}_4\right) \mathrm{Br} \cdot 5 \mathrm{NH}_3 & 1 \\ \hline \end{array} $$The pair in which both the species have same magnetic moment (spin only) is
A metal complex absorbed orange light. The colour in which it appears is
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
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?
Among the following Cr(III) complexes, which one will have the highest octahedral crystal field splitting?
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
The correct match for complex with its magnetic behaviour in the following is
$A^{2+}, B^{2+}$ 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
Which of the following molecules is colourless?