Coordination Compounds

The metal atom present in the complex MABXL (where A, B, X and L are unidentate ligands and \(\mathrm{M}\) is metal) involves \(\mathrm{sp}^3\) hybridization. The number of geometrical isomers exhibited by the complex is :

The number of complexes from the following with no electrons in the \(t_2\) orbital is ______. $$\mathrm{TiCl}_4,\left[\mathrm{MnO}_4\right]^{-},\left[\mathrm{FeO}_4\right]^{2-},\left[\mathrm{FeCl}_4\right]^{-},\left[\mathrm{CoCl}_4\right]^...

The correct sequence of ligands in the order of decreasing field strength is :

Number of complexes from the following with even number of unpaired "\(\mathrm{d}\)" electrons is ________ $$[\mathrm{V}(\mathrm{H}_2 \mathrm{O})_6]^{3+},[\mathrm{Cr}(\mathrm{H}_2 \mathrm{O})_6]^{2+},[\mathrm{Fe}(\mathrm{H}_2 \mathrm{O})_6]...

If an iron (III) complex with the formula \(\left[\mathrm{Fe}\left(\mathrm{NH}_3\right)_x(\mathrm{CN})_y\right]^-\) has no electron in its \(e_g\) orbital, then the value of \(x+y\) is

A first row transition metal in its +2 oxidation state has a spin-only magnetic moment value of \(3.86 \mathrm{~BM}\). The atomic number of the metal is

The number of unpaired d-electrons in \(\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}\) is ________.

The 'Spin only' Magnetic moment for \(\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right]^{2+}\) is _________ \(\times 10^{-1} \mathrm{~BM}\). (given \(=\) Atomic number of \(\mathrm{Ni}: 28\))

The correct statements from following are:
A. The strength of anionic ligands can be explained by crystal field theory.
B. Valence bond theory does not give a quantitative interpretation of kinetic stability of coordination compounds.
C. Th...

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Select the option with correct property -

Choose the correct statements from the following :
(A) Ethane-1, 2-diamine is a chelating ligand.
(B) Metallic aluminium is produced by electrolysis of aluminium oxide in presence of cryolite.
(C) Cyanide ion is used as ligand for leaching ...

Number of complexes which show optical isomerism among the following is ________.
$$\text { cis- }\left[\mathrm{Cr}(\mathrm{ox})_2 \mathrm{Cl}_2\right]^{3-},\left[\mathrm{Co}(\text {en})_3\right]^{3+}, \text { cis- }\left[\mathrm{Pt}(\text ...

The coordination geometry around the manganese in decacarbonyldimanganese \((0)\) is

In which one of the following metal carbonyls, \(\mathrm{CO}\) forms a bridge between metal atoms?

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A reagent which gives brilliant red precipitate with Nickel ions in basic medium is

Yellow compound of lead chromate gets dissolved on treatment with hot \(\mathrm{NaOH}\) solution. The product of lead formed is a :

Consider the following complex ions
$$\begin{aligned}
& \mathrm{P}=\left[\mathrm{FeF}_6\right]^{3-} \\
& \mathrm{Q}=\left[\mathrm{V}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+} \\
& \mathrm{R}=\left[\mathrm{Fe}\left(\mathrm{H}_2 \math...

The Spin only magnetic moment value of square planar complex \(\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}\left(\mathrm{NH}_2 \mathrm{CH}_3\right)\right] \mathrm{Cl}\) is _________ B.M. (Nearest integer)
(Given atomic number f...

Identify from the following species in which \(\mathrm{d}^2 \mathrm{sp}^3\) hybridization is shown by central atom :

Identity the incorrect pair from the following :

Given below are two statements :
Statement (I) : A solution of $\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ is green in colour.
Statement (II) : A solution of $\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$ is colour...

Which of the following complex is homoleptic?

Which of the following compounds show colour due to d-d transition?

Given below are two statements :
Statement (I) : Dimethyl glyoxime forms a six-membered covalent chelate when treated with $\mathrm{NiCl}_2$ solution in presence of $\mathrm{NH}_4 \mathrm{OH}$.

Statement (II) : Prussian blue precipitate co...

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ and $\left[\mathrm{CoF}_6\right]^{3-}$ are respectively known as :

The correct order of spin only magnetic moments for the following complex ions is

Which of the following complex is octahedral, diamagnetic and the most stable?

The observed magnetic moment of the complex \(\left.\left[\operatorname{Mn}(\underline{N} C S)_{6}\right)\right]^{x^{-}}\) is \(6.06 ~\mathrm{BM}\). The numerical value of \(x\) is __________.

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Number of ambidentate ligands in a representative metal complex \(\left[\mathrm{M}(\mathrm{en})(\mathrm{SCN})_{4}\right]\) is ___________.
[en = ethylenediamine]

Given below are two statements, one is labelled as Assertion \(\mathbf{A}\) and the other is labelled as Reason \(\mathbf{R}\).
Assertion A: The spin only magnetic moment value for \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}\) is $$1.7...

The IUPAC name of \(\mathrm{K}_{3}\left[\mathrm{Co}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]\) is:-

Cobalt chloride when dissolved in water forms pink colored complex \(\underline{\mathrm{X}}\) which has
octahedral geometry. This solution on treating with conc \(\mathrm{HCl}\) forms deep blue complex, \(\underline{\mathrm{Y}}\) which has ...

If the CFSE of $\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$ is $-96.0 \mathrm{~kJ} / \mathrm{mol}$, this complex will absorb maximum at wavelength ___________ $\mathrm{nm}$. (nearest integer)

Assume Planck's co...

Which of the following is correct order of ligand field strength?

To inhibit the growth of tumours, identify the compounds used from the following :
A. EDTA
B. Coordination Compounds of Pt
C. D - Penicillamine
D. Cis - Platin
Choose the correct answer from the option given below :

The $\mathrm{Cl}-\mathrm{Co}-\mathrm{Cl}$ bond angle values in a fac- $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}_{3}\right]$ complex is/are :

Match List I with List II:

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The sum of bridging carbonyls in \(\mathrm{W(CO)_6}\) and \(\mathrm{Mn_2(CO)_{10}}\) is ____________.

Chiral complex from the following is :
Here en = ethylene diamine

Correct order of spin only magnetic moment of the following complex ions is :
(Given At.no. Fe : 26, Co : 27)

The number of paramagnetic species from the following is _____________.
\(\mathrm{{[Ni{(CN)_4}]^{2 - }},[Ni{(CO)_4}],{[NiC{l_4}]^{2 - }}}\)
\(\mathrm{{[Fe{(CN)_6}]^{4 - }},{[Cu{(N{H_3})_4}]^{2 + }}}\)
$$\mathrm{{[Fe{(CN)_6}]^{3 - }}\,and\,{...

Total number of moles of AgCl precipitated on addition of excess of AgNO\(_3\) to one mole each of the following complexes \(\mathrm{[Co(NH_3)_4Cl_2]Cl,[Ni(H_2O)_6]Cl_2,[Pt(NH_3)_2Cl_2]}\) and \(\mathrm{[Pd(NH_3)_4]Cl_2}\) is ___________.

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The d-electronic configuration of \(\mathrm{[CoCl_4]^{2-}}\) in tetrahedral crystal field in \({e^mt_2^n}\). Sum of "m" and "number of unpaired electrons" is ___________

The primary and secondary valencies of cobalt respectively in \(\mathrm{[Co(NH_3)_5Cl]Cl_2}\) are :

Which of the following cannot be explained by crystal field theory?

The hybridization and magnetic behaviour of cobalt ion in \(\mathrm{[Co(NH_3)_6]^{3+}}\) complex, respectively is :