Coordination Compounds — JEE Main PYQs

The electronic spectrum of ${\left[\mathrm{Ti}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+}$ shows a single broad peak with a maximum at $20,300{\mathrm{cm}}^{-1}$. The crystal field stabilization energy (CFSE) of the complex ion, in kJ ${\mathrm{mol}}^{-1}$, is: …

The complex that can shows optical activity is:

Complex A has a composition of ${\mathrm{H}}_{12}{\mathrm{O}}_6{\mathrm{Cl}}_3\mathrm{Cr}$. If the complex on treatment with conc. ${\mathrm{H}}_2{\mathrm{SO}}_4$ loses $13.5\%$ of its original mass, the correct molecular formula of A is:
[Given : atomic mass of …

The d - electron configuration of $\left[\mathrm{Ru}(\mathrm{en}{)}_3\right]{\mathrm{Cl}}_2$ and $\left[\mathrm{Fe}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]{\mathrm{Cl}}_2$, respectively are:

For a $d^4$ metal ion in an octahedral field, the correct electronic configuration is:

The values of the crystal field stabilization energies for a high spin $d^6$ metal ion in octahedral and tetrahedral fields, respectively, are:

The total number of coordination sites in ethylenediaminetetraacetate (EDTA ${}^{4-}$) is ____.

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

The number of isomers possible for $\left[\mathrm{Pt}(\mathrm{en}){\left({\mathrm{NO}}_2\right)}_2\right]$ is:

The Crystal Field Stabilization Energy (CFSE) of $\left[{\mathrm{CoF}}_3{\left({\mathrm{H}}_2\mathrm{O}\right)}_3\right]\left({\Delta }_0<\mathrm{P}\right)$ is :

The one that can exhibit highest paramagnetic behaviour among the following is: gly = glycinato ; bpy = 2, 2'-bipyridine

The correct order of the spin only magnetic moment of metal ions in the following low spin complexes, ${\left[\mathrm{V}(\mathrm{CN}{)}_6\right]}^{4-},{\left[\mathrm{Fe}(\mathrm{CN}{)}_6\right]}^{4-},{\left[\mathrm{Ru}{\left({\mathrm{NH}}_3\right)}_6\right]}^{3+}$, and …

The following ligand is:

The calculated spin only magnetic moments (BM) of the anionic and cationic species of ${\left[\mathrm{Fe}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}_2$ and $\left[\mathrm{Fe}(\mathrm{CN}{)}_6\right]$, respectively, are:

The compound that inhibits the growth of tumors is:

The number of water molecule(s) not coordinated to copper ion directly in ${\mathrm{CuSO}}_4\cdot 5{\mathrm{H}}_2\mathrm{O}$, is:

The one that will show optical activity is: (en = ethane-1, 2-diamine)

The degenerate orbitals of ${\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+}$ are:

The total number of isomers for a square planar complex $\left[\mathrm{M}(\mathrm{F})(\mathrm{Cl})(\mathrm{SCN})\left({\mathrm{NO}}_2\right)\right]$ is

Wilkinson catalyst is

The coordination number of Th in ${\mathrm{K}}_4\left[\mathrm{Th}{\left({\mathrm{C}}_2{\mathrm{O}}_4\right)}_4{\left({\mathrm{OH}}_2\right)}_2\right]$ is: $({\mathrm{C}}_2{\mathrm{O}}_4^{2-}=\mathrm{O}$ xalato $)$

The number of bridging CO ligand(s) and Co - Co bond $(\mathrm{s})$ in ${\mathrm{Co}}_2(\mathrm{CO}{)}_8$ respectively are:

The complex ion that will lose its crystal field stabilization energy upon oxidation of its metal to +3 state is
(Phen = (see structure) and ignore pairing energy)

Complete removal of both the axial ligands (along the z -axis) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale).

The INCORRECT statement is:

The crystal field stabilization energy (CFSE) of $\left[\mathrm{Fe}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]{\mathrm{Cl}}_2$ and ${\mathrm{K}}_2\left[{\mathrm{NiCl}}_4\right]$, respectively, are :-

Match the metal column I with the coordination compounds/enzymes column II

Column I
Metals
a. Co
b. Zn
c. Rh
d. Mg

Column II
Coordination compounds/enzymes
i. Wilkinson catalyst
ii. Chlorophyll
iii. Vitamin ${\mathrm{B}}_{12}$
iv. Carbonic anhydrase

${\mathrm{Mn}}_2(\mathrm{CO}{)}_{10}$ is an organometalic compound due to the presence of

The metal d-orbital that can directly facing the ligands in $\mathrm{K}{}_3[\mathrm{Co}(\mathrm{CN}){}_6]$ are

The coordination numbers of Co and Al in $\left[\mathrm{Co}(\mathrm{Cl})(\mathrm{en}{)}_2\right]\mathrm{Cl}$ and ${\mathrm{K}}_3\left[\mathrm{Al}{\left({\mathrm{C}}_2{\mathrm{O}}_4\right)}_3\right]$, respectively, are
(en = ethane-1,2-diamine)

The compound used in the treatment of lead poisoning is:

The magnetic moment of an octahedral homoleptic Mn (II) complex is 5.9 BM. The suitable ligand for this complex is :

The maximum possible denticities of a ligand given below towards a common transition and inner-transition metal ion, respectively, are:

The correct statements among I to III are:
I. Valence bond theory cannot explain the color exhibited by transition metal complexes
II. Valence bond theory can predict quantitatively the magnetic properties of transition metal complexes
III. Valence bond theory cannot distinguish …

The complex that has highest crystal field splitting energy( $\Delta$ ) is

Homoleptic octahedral complexes of a metal ion '${\mathrm{M}}^{3+}$' with three monodentate ligands ${\mathrm{L}}_1$, ${\mathrm{L}}_2$ and ${\mathrm{L}}_3$ absorb wavelengths in the region of green, blue and red respectively. The increasing order of the ligand strength is

Two complexes $\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]{\mathrm{Cl}}_3$ (A) and $\left[\mathrm{Cr}{\left({\mathrm{NH}}_3\right)}_6\right]{\mathrm{Cl}}_3$ (B) are violet and yellow coloured respectively. The incorrect statement regarding them is

The highest value of the calculated spin-only magnetic moment (in BM) among all the transition metal complexes is

The species that can have a trans-isomer is:
(en = ethane-1,2-diamine, ox = oxalate)

Three complexes, …

Consider the following reaction and statements :
${\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_4{\mathrm{Br}}_2\right]}^{+}+{\mathrm{Br}}^{-}\to \left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_3{\mathrm{Br}}_3\right]+{\mathrm{NH}}_3$
(I) Two isomers are produced if the …

On treatment of 100 mL of 0.1 M solution of ${\mathrm{CoCl}}_3\cdot 6{\mathrm{H}}_2\mathrm{O}$ with excess ${\mathrm{AgNO}}_3$; $1.2\times 10^{22}$ ions are precipitated. The complex is :

The pair having the same magnetic moment is :
[At. No.: $\mathrm{Cr}=24,\mathrm{Mn}=25,\mathrm{Fe}=26,\mathrm{Co}=27$ ]

Which one of the following complexes shows optical isomerism?
(en = ethylenediamine)

The number of geometric isomers that can exist for square planar ${\left[\mathrm{Pt}(\mathrm{Cl})(\mathrm{py})({\mathrm{NH}}_3)({\mathrm{NH}}_2\mathrm{OH})\right]}^{+}$ is (py = pyridine):

Which of the following compounds is not colored yellow?

The octahedral complex of a metal ion ${\mathrm{M}}^{3+}$ with four monodentate ligands ${\mathrm{L}}_1,{\mathrm{L}}_2,{\mathrm{L}}_3$ and ${\mathrm{L}}_4$ absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of …

The equation which is balanced and represents the correct product(s) is:

Which of the following complex species is not expected to exhibit optical isomerism?

Which among the following will be named as dibromidobis(ethylene diamine)chromium(III) bromide ?