Coordination Compounds PYQs - Last 10 Years
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ChemistryInorganic Chemistry2017-2026
Practice 313 JEE Main Chemistry questions from Coordination Compounds. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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Last 10 Years Coordination Compounds Questions
Showing 50 of 313 filtered questions.
1Coordination Compounds
Consider the following metal complexes :
\(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)
\(\left[\mathrm{CoCl}\left(\mathrm{NH}_{3}\right)_{5}\right]^{2+}\)
\(\left[\mathrm{Co}(\mathrm{CN})_{6}\right]^{3-}\)
$$\left[\mathr...
\(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)
\(\left[\mathrm{CoCl}\left(\mathrm{NH}_{3}\right)_{5}\right]^{2+}\)
\(\left[\mathrm{Co}(\mathrm{CN})_{6}\right]^{3-}\)
$$\left[\mathr...
INTEGER+4 / -12022
2Coordination Compounds
The correct order of energy of absorption for the following metal complexes is :
A : [Ni(en)3]2+ , B : [Ni(NH3)6]2+ , C : [Ni(H2O)6]2+
A : [Ni(en)3]2+ , B : [Ni(NH3)6]2+ , C : [Ni(H2O)6]2+
MCQ+4 / -12022
3Coordination Compounds
In the cobalt-carbonyl complex : [Co2(CO)8], number of Co-Co bonds is "X" and terminal CO ligands is "Y". X + Y = ___________.
INTEGER+4 / -12022
4Coordination Compounds
Match List - I with List - II :
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MCQ+4 / -12022
5Coordination Compounds
Transition metal complex with highest value of crystal field splitting (\(\Delta\)0) will be :
MCQ+4 / -12022
6Coordination Compounds
The denticity of an organic ligand, biuret is :
MCQ+4 / -12021
7Coordination Compounds
Spin only magnetic moment in BM of [Fe(CO)4(C2O4)]+ is :
MCQ+4 / -12021
8Coordination Compounds
The number of geometrical isomers possible in triamminetrinitrocobalt (III) is X and in trioxalatochromate (III) is Y. Then the value of X + Y is _______________.
INTEGER+4 / -12021
9Coordination Compounds
The number of geometrical isomers found in the metal complexes [PtCl2(NH3)2], [Ni(CO)4], [Ru(H2O)3Cl3 and [CoCl2(NH3)4]+ respectively, are :
MCQ+4 / -12021
10Coordination Compounds
The type of hybridisation and magnetic property of the complex [MnCl6]3\(-\), respectively, are :
MCQ+4 / -12021
11Coordination Compounds
3 moles of metal complex with formula Co(en)2Cl3 gives 3 moles of silver chloride on treatment with excess of silver nitrate. The secondary valency of Co in the complex is ___________.(Round off to the nearest integer)
INTEGER+4 / -12021
12Coordination Compounds
Given below are two statements :Statement I : \({[Mn{(CN)_6}]^{3 - }}\), \({[Fe{(CN)_6}]^{3 - }}\) and \({[Co{({C_2}{O_4})_3}]^{3 - }}\) are d2sp3 hybridised.Statement II : \({[MnCl)_6}{]^{3 - }}\) and \({[Fe{F_6}]^{3 - }}\) are paramagneti...
MCQ+4 / -12021
13Coordination Compounds
1 mol of an octahedral metal complex with formula MCl3 . 2L on reaction with excess of AgNO3 gives 1 mol of AgCl. The denticity of Ligand L is ____________. (Integer answer)
INTEGER+4 / -12021
14Coordination Compounds
The number of optical isomers possible for [Cr(C2O4)3]3\(-\) is ____________.
INTEGER+4 / -12021
15Coordination Compounds
Number of bridging CO ligands in [Mn2(CO)10] is __________.
INTEGER+4 / -12021
16Coordination Compounds
The number of stereoisomers possible for [Co(ox)2(Br)(NH3)]2\(-\) is ___________. [ox = oxalate]
INTEGER+4 / -12021
17Coordination Compounds
The ratio of number of water molecules in Mohr's salt and potash alum is ____________ \(\times\) 10\(-\)1. (Integer answer)
INTEGER+4 / -12021
18Coordination Compounds
The overall stability constant of the complex ion [Cu(NH3)4]2+ is 2.1 \(\times\) 1013. The overall dissociations constant is y \(\times\) 10\(-\)14. Then y is __________. (Nearest integer)
INTEGER+4 / -12021
19Coordination Compounds
Arrange the following Cobalt complexes in the order of increasing Crystal Field Stabilization Energy (CFSE) value.Complexes : $$\mathop {{{[Co{F_6}]}^{3 - }}}\limits_A ,\mathop {{{[Co{{({H_2}O)}_6}]}^{2 + }}}\limits_B ,\mathop {{{[Co{{(N{H_...
MCQ+4 / -12021
20Coordination Compounds
Indicate the complex/complex ion which did not show any geometrical isomerism :
MCQ+4 / -12021
21Coordination Compounds
Three moles of AgCl get precipitated when one mole of an octahedral co-ordination compound with empirical formula CrCl3.3NH3.3H2O reacts with excess of silver nitrate. The number of chloride ions satisfying the secondary valency of the meta...
INTEGER+4 / -12021
22Coordination Compounds
Which one of the following species responds to an external magnetic field?
MCQ+4 / -12021
23Coordination Compounds
Which one of the following metal complexes is most stable?
MCQ+4 / -12021
24Coordination Compounds
The hybridization and magnetic nature of \({[Mn{(CN)_6}]^{4 - }}\) and \({[Fe{(CN)_6}]^{3 - }}\), respectively are :
MCQ+4 / -12021
25Coordination Compounds
In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment?(i) [FeF6]3\(-\)(ii) [Co(NH3)6]3+(iii) [NiCl4]2\(-\)(iv) [Cu(NH3)4]2+
MCQ+4 / -12021
26Coordination Compounds
The spin only magnetic moment of a divalent ion in aqueous solution (atomic number 29) is _________ BM.
INTEGER+4 / -12021
27Coordination Compounds
The calculated magnetic moments (spin only value) for species \({[FeC{l_4}]^{2 - }}\), \({[Co{({C_2}{O_4})_3}]^{3 - }}\) and \(MnO_4^{2 - }\) respectively are :
MCQ+4 / -12021
28Coordination Compounds
The total number of unpaired electrons present in [Co(NH3)6]Cl2 and [Co(NH3)6]Cl3 is :
INTEGER+4 / -12021
29Coordination Compounds
The spin-only magnetic moment value for the complex [Co(CN)6]4\(-\) is __________ BM.[At. no. of Co = 27]
INTEGER+4 / -12021
30Coordination Compounds
The correct order of intensity of colors of the compounds is :
MCQ+4 / -12021
31Coordination Compounds
According to the valence bond theory the hybridization of central metal atom is dsp2 for which one of the following compounds?
MCQ+4 / -12021
32Coordination Compounds
An aqueous solution of NiCl2 was heated with excess sodium cyanide in presence of strong oxidizing agent to form [Ni(CN)6]2\(-\). The total change in number of unpaired electrons on metal centre is _______________.
INTEGER+4 / -12021
33Coordination Compounds
Which one of the following species doesn't have a magnetic moment of 1.73 BM, (spin only value)?
MCQ+4 / -12021
34Coordination Compounds
Spin only magnetic moment of an octahedral complex of Fe2+ in the presence of a strong field ligand in BM is :
MCQ+4 / -12021
35Coordination Compounds
The sum of oxidation states of two silver ions in [Ag(NH3)2] [Ag(CN)2] complex is _____________.
INTEGER+4 / -12021
36Coordination Compounds
The potassium ferrocyanide solution gives a Prussian blue colour, when added to :
MCQ+4 / -12021
37Coordination Compounds
The Crystal Field Stabilization Energy (CFSE) and magnetic moment (spin-only) of an octahedral aqua complex of a metal ion (Mz+) are \(-\)0.8 \(\Delta\)0 and 3.87 BM, respectively. Identify (Mz+) :
MCQ+4 / -12021
38Coordination Compounds
The correct structures of trans-[NiBr2(PPh3)2] and meridonial-[Co(NH3)3(NO2)3], respectively, are
MCQ+4 / -12021
39Coordination Compounds
The total number of unpaired electrons present in the complex K3[Cr(oxalate)3] is _____________.
INTEGER+4 / -12021
40Coordination Compounds
The secondary valency and the number of hydrogen bonded water molecule(s) in CuSO4 . 5H2O, respectively, are :
MCQ+4 / -12021
41Coordination Compounds
Match List - I with List - II :
List - I
List - II
(a)
\([Co{(N{H_3})_6}][Cr{(CN)_6}]\)
(i)
Linkage isomerism
(b)
\([Co{(N{H_3})_3}{(N{O_2})_3}]\)
(ii)
Solvate isomerism
...
List - I
List - II
(a)
\([Co{(N{H_3})_6}][Cr{(CN)_6}]\)
(i)
Linkage isomerism
(b)
\([Co{(N{H_3})_3}{(N{O_2})_3}]\)
(ii)
Solvate isomerism
...
MCQ+4 / -12021
42Coordination Compounds
On complete reaction of FeCl3 with oxalic acid in aqueous solution containing KOH, resulted in the formation of product A. The secondary valency of Fe in the product A is __________. (Round off to the Nearest Integer).
INTEGER+4 / -12021
43Coordination Compounds
The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-complex of CoCl3 . 4NH3 is _________. (Round off to the Nearest Integer).
INTEGER+4 / -12021
44Coordination Compounds
[Ti(H2O)6]3+ absorbs light of wavelength 498 nm during a d \(-\) d transition. The octahedral splitting energy for the above complex is ____________ \(\times\) 10\(-\)19 J. (Round off to the Nearest Integer). h = 6.626 \(\times\) 10\(-\)34 ...
INTEGER+4 / -12021
45Coordination Compounds
Complex X of composition Cr(H2O)6Cln
has a spin only magnetic moment of 3.83
BM. It reacts with AgNO3 and shows
geometrical isomerism. The IUPAC
nomenclature of X is :
has a spin only magnetic moment of 3.83
BM. It reacts with AgNO3 and shows
geometrical isomerism. The IUPAC
nomenclature of X is :
MCQ+4 / -12020
46Coordination Compounds
[Pd(F)(Cl)(Br)(I)]2– has n number of
geometrical isomers. Then, the spin-only
magnetic moment and crystal field stabilisation
energy [CFSE] of [Fe(CN)6]n–6, respectively,
are:
[Note : Ignore the pairing energy]
geometrical isomers. Then, the spin-only
magnetic moment and crystal field stabilisation
energy [CFSE] of [Fe(CN)6]n–6, respectively,
are:
[Note : Ignore the pairing energy]
MCQ+4 / -12020
47Coordination Compounds
The correct order of the spin-only magnetic
moments of the following complexes is :
(I) [Cr(H2O)6]Br2
(II) Na4[Fe(CN)6]
(III) Na3[Fe(C2O4)3] (\(\Delta\)0 \(>\) P)
(IV) (Et4N)2[CoCl4]
moments of the following complexes is :
(I) [Cr(H2O)6]Br2
(II) Na4[Fe(CN)6]
(III) Na3[Fe(C2O4)3] (\(\Delta\)0 \(>\) P)
(IV) (Et4N)2[CoCl4]
MCQ+4 / -12020
48Coordination Compounds
The isomer(s) of [Co(NH3)4Cl2] that has/have
a Cl–Co–Cl angle of 90°, is/are :
a Cl–Co–Cl angle of 90°, is/are :
MCQ+4 / -12020
49Coordination Compounds
The complex that can show fac- and mer-isomers is :
MCQ+4 / -12020
50Coordination Compounds
Among (a) – (d) the complexes that can display
geometrical isomerism are :
(a) [Pt(NH3)3Cl]+
(b) [Pt(NH3)Cl5]–
(c) [Pt(NH3)2Cl(NO2)]
(d) [Pt(NH3)4ClBr]2+
geometrical isomerism are :
(a) [Pt(NH3)3Cl]+
(b) [Pt(NH3)Cl5]–
(c) [Pt(NH3)2Cl(NO2)]
(d) [Pt(NH3)4ClBr]2+
MCQ+4 / -12020