Coordination Compounds

Which one of the following complex ions is diamagnetic in nature?

\(\text { Observe the following complex ions }\)
$$ \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(\ma...

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-}...

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\r...

Which one of the following is not an ambidenate ligand?

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}\righ...

The molecular formula of a coordinate complex is $\mathrm{CoH}_{12} \mathrm{O}_6 \mathrm{Cl}_3$. When one mole of this aqueous solution of complex is reacted with excess of aqueous $\mathrm{AgNO}_3$ solution, three moles of AgCl was formed....

Which of the following will have a spin only magnetic moment of 2.86 BM ?

$\mathrm{Pt}+3: 1$ 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 ?

Which one of the following complex ions has geometrical isomers?

In which of the following ions the spin only magnetic moment is lowest?

Identify the complex ion with electronic configuration $t_{2 g}^3 e_g^2$.

Arrange the following in increasing order of their crystal field splitting energyI. $\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$II. $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$III. $\left[\mat...

\(\text { Match the following. }\)
$$ \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{arra...

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

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

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.)

Match the following.The correct answer is Table

Identify the incorrect match from the following.

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

\(\text { Match the following }\)


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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 { M...

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

The correct order of decreasing field strength of the below given ligands 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}\rig...

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

Which compound is zero valent metal complex?

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

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

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

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

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