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JEE Main

Coordination Compounds

Chemistry

Previous Years Questions

MCQ (Single Correct Answer)

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Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:soli...
JEE Main 2022 (Online) 28th July Evening Shift
$$\mathrm{Fe}^{3+}$$ cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the ...
JEE Main 2022 (Online) 27th July Evening Shift
Low oxidation state of metals in their complexes are common when ligands:
JEE Main 2022 (Online) 27th July Evening Shift
The metal complex that is diamagnetic is (Atomic number: $$\mathrm{Fe}, 26 ; \mathrm{Cu}, 29)$$
JEE Main 2022 (Online) 26th July Evening Shift
The correct order of energy of absorption for the following metal complexes is A : [Ni(en)3]2+ , B : [Ni(NH3)6]2+ , C : ...
JEE Main 2022 (Online) 25th July Evening Shift
Correct formula of the compound which gives a white precipitate with BaCl2 solution, but not with AgNO3 solution, is...
JEE Main 2022 (Online) 30th June Morning Shift
Match List - I with List - II : .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-styl...
JEE Main 2022 (Online) 24th June Morning Shift
Transition metal complex with highest value of crystal field splitting ($$\Delta$$0) will be
JEE Main 2022 (Online) 24th June Evening Shift
Which statement is not true with respect to nitrate ion test?
JEE Main 2022 (Online) 26th June Morning Shift
Which of the following will have maximum stabilization due to crystal field?
JEE Main 2022 (Online) 27th June Morning Shift
Arrange the following coordination compounds in the increasing order of magnetic moments. (Atomic numbers : Mn = 25; Fe ...
JEE Main 2022 (Online) 27th June Evening Shift
The formula of the purple colour formed in Laissaigne's test for sulphur using sodium nitroprusside is
JEE Main 2022 (Online) 28th June Morning Shift
Given below are two statements : Statement I : [Ni(CN)4]2$$-$$ is square planar and diamagnetic complex, with dsp2 hybri...
JEE Main 2022 (Online) 28th June Morning Shift
Given below are two statements. $$\bullet$$ Statement I : In CuSO4 . 5H2O, Cu-O bonds are present. $$\bullet$$ Statement...
JEE Main 2022 (Online) 29th June Evening Shift
The potassium ferrocyanide solution gives a Prussian blue colour, when added to :
JEE Main 2021 (Online) 1st September Evening Shift
The Crystal Field Stabilization Energy (CFSE) and magnetic moment (spin-only) of an octahedral aqua complex of a metal i...
JEE Main 2021 (Online) 1st September Evening Shift
Spin only magnetic moment in BM of [Fe(CO)4(C2O4)]+ is :
JEE Main 2021 (Online) 31st August Evening Shift
The denticity of an organic ligand, biuret is :
JEE Main 2021 (Online) 31st August Morning Shift
The addition of dilute NaOH to Cr3+ salt solution will give :
JEE Main 2021 (Online) 27th August Evening Shift
Arrange the following Cobalt complexes in the order of increasing Crystal Field Stabilization Energy (CFSE) value.Comple...
JEE Main 2021 (Online) 26th August Evening Shift
Indicate the complex/complex ion which did not show any geometrical isomerism :
JEE Main 2021 (Online) 26th August Evening Shift
Which one of the following complexes is violet in colour?
JEE Main 2021 (Online) 26th August Morning Shift
Given below are two statements :Statement I : $${[Mn{(CN)_6}]^{3 - }}$$, $${[Fe{(CN)_6}]^{3 - }}$$ and $${[Co{({C_2}{O_4...
JEE Main 2021 (Online) 27th July Evening Shift
The number of geometrical isomers found in the metal complexes [PtCl2(NH3)2], [Ni(CO)4], [Ru(H2O)3Cl3 and [CoCl2(NH3)4]+...
JEE Main 2021 (Online) 27th July Morning Shift
The type of hybridisation and magnetic property of the complex [MnCl6]3$$-$$, respectively, are :
JEE Main 2021 (Online) 27th July Morning Shift
Which one of the following metal complexes is most stable?
JEE Main 2021 (Online) 25th July Evening Shift
Which one of the following compounds of Group-14 elements is not known?
JEE Main 2021 (Online) 25th July Morning Shift
Which one of the following species responds to an external magnetic field?
JEE Main 2021 (Online) 25th July Morning Shift
Which one of the following species doesn't have a magnetic moment of 1.73 BM, (spin only value)?
JEE Main 2021 (Online) 20th July Evening Shift
Spin only magnetic moment of an octahedral complex of Fe2+ in the presence of a strong field ligand in BM is :...
JEE Main 2021 (Online) 20th July Evening Shift
The correct order of intensity of colors of the compounds is :
JEE Main 2021 (Online) 20th July Morning Shift
According to the valence bond theory the hybridization of central metal atom is dsp2 for which one of the following comp...
JEE Main 2021 (Online) 20th July Morning Shift
The correct structures of trans-[NiBr2(PPh3)2] and meridonial-[Co(NH3)3(NO2)3], respectively, are...
JEE Main 2021 (Online) 18th March Morning Shift
Match List - I with List - II : List - I List - II (a) $$[Co{(N{H_3})_6}][Cr{(CN)_...
JEE Main 2021 (Online) 17th March Evening Shift
Arrange the following metal complex/compounds in the increasing order of spin only magnetic moment. Presume all the thre...
JEE Main 2021 (Online) 16th March Evening Shift
In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only...
JEE Main 2021 (Online) 25th February Evening Shift
The hybridization and magnetic nature of $${[Mn{(CN)_6}]^{4 - }}$$ and $${[Fe{(CN)_6}]^{3 - }}$$, respectively are :
JEE Main 2021 (Online) 25th February Morning Slot
The calculated magnetic moments (spin only value) for species $${[FeC{l_4}]^{2 - }}$$, $${[Co{({C_2}{O_4})_3}]^{3 - }}$$...
JEE Main 2021 (Online) 24th February Evening Slot
For a d4 metal ion in an octahedral field, the correct electronic configuration is :
JEE Main 2020 (Online) 6th September Evening Slot
The species that has a spin-only magnetic moment of 5.9 BM, is : (Td = tetrahedral)
JEE Main 2020 (Online) 6th September Morning Slot
Consider the complex ions, trans-[Co(en)2Cl2]+ (A) and cis-[Co(en)2Cl2]+ (B). The correct statement regarding them is :...
JEE Main 2020 (Online) 5th September Evening Slot
The values of the crystal field stabilization energies for a high spin d6 metal ion in octahedral and tetrahedral fields...
JEE Main 2020 (Online) 5th September Morning Slot
The molecule in which hybrid MOs involve only one d-orbital of the central atom is :
JEE Main 2020 (Online) 4th September Evening Slot
The one that can exhibit highest paramagnetic behaviour among the following is : gly = glycinato; bpy = 2, 2'-bipyridine...
JEE Main 2020 (Online) 4th September Evening Slot
The Crystal Field Stabilization Energy (CFSE) of [CoF3(H2O)3] ($$\Delta $$0 < P) is :...
JEE Main 2020 (Online) 4th September Evening Slot
The pair in which both the species have the same magnetic moment (spin only) is :
JEE Main 2020 (Online) 4th September Morning Slot
The number of isomers possible for [Pt(en)(NO2)2] is :
JEE Main 2020 (Online) 4th September Morning Slot
Complex A has a composition of H12O6Cl3Cr. If the complex on treatment with conc.H2SO4 loses 13.5% of its original mass...
JEE Main 2020 (Online) 3rd September Evening Slot
The d-electron configuration of [Ru(en)3 ]Cl2 and [Fe(H2O)6]Cl2 , respectively are :...
JEE Main 2020 (Online) 3rd September Evening Slot
The electronic spectrum of [Ti(H2O)6]3+ shows a single broad peak with a maximum at 20,300 cm-1 . The crystal field stab...
JEE Main 2020 (Online) 3rd September Morning Slot
The complex that can show optical activity is :
JEE Main 2020 (Online) 3rd September Morning Slot
The one that is not expected to show isomerism is :
JEE Main 2020 (Online) 2nd September Evening Slot
Simplified absorption spectra of three complexes ((i), (ii) and (iii)) of Mn+ ion are provided below; their $$\lambda $$...
JEE Main 2020 (Online) 2nd September Evening Slot
Consider that a d6 metal ion (M2+) forms a complex with aqua ligands, and the spin only magnetic moment of the complex i...
JEE Main 2020 (Online) 2nd September Morning Slot
For octahedral Mn(II) and tetrahedral Ni(II) complexes, consider the following statements: (I) both the complexes can be...
JEE Main 2020 (Online) 2nd September Morning Slot
The isomer(s) of [Co(NH3)4Cl2] that has/have a Cl–Co–Cl angle of 90°, is/are :
JEE Main 2020 (Online) 9th January Evening Slot
The correct order of the spin-only magnetic moments of the following complexes is : (I) [Cr(H2O)6]Br2 (II) Na4[Fe(CN)6] ...
JEE Main 2020 (Online) 9th January Evening Slot
Complex X of composition Cr(H2O)6Cln has a spin only magnetic moment of 3.83 BM. It reacts with AgNO3 and shows geometri...
JEE Main 2020 (Online) 9th January Morning Slot
[Pd(F)(Cl)(Br)(I)]2– has n number of geometrical isomers. Then, the spin-only magnetic moment and crystal field stabilis...
JEE Main 2020 (Online) 9th January Morning Slot
The correct order of the calculated spin-only magnetic moments of complexs (A) to (D) is: (A) Ni(CO)4 (B) [Ni(H2O)6]Cl2 ...
JEE Main 2020 (Online) 8th January Evening Slot
Among (a) – (d) the complexes that can display geometrical isomerism are : (a) [Pt(NH3)3Cl]+ (b) [Pt(NH3)Cl5]– (c) [Pt(...
JEE Main 2020 (Online) 8th January Evening Slot
The complex that can show fac- and mer-isomers is :
JEE Main 2020 (Online) 8th January Morning Slot
Among the statements(a)-(d) the incorrect ones are : (a) Octahedral CO(III) complexes with strong fields ligands have ve...
JEE Main 2020 (Online) 7th January Evening Slot
The number of possible optical isomers for the complexes MA2B2 with sp3 and dsp2 hydridized metal atom. respectively, is...
JEE Main 2020 (Online) 7th January Evening Slot
The IUPAC name of complex [Pt(NH3)2Cl(NH2CH3)]Cl is:
JEE Main 2020 (Online) 7th January Morning Slot
The theory that can completely/properly explain the nature of bonding in [Ni(Co)4] is :
JEE Main 2020 (Online) 7th January Morning Slot
The compound used in the treatment of lead poisoning is :
JEE Main 2019 (Online) 12th April Evening Slot
The coordination numbers of Co and Al in [Co(Cl)(en)2]Cl and K3[Al(C2O4)3], respectively, are : (en = ethane-1, 2-diamin...
JEE Main 2019 (Online) 12th April Evening Slot
Complete removal of both the axial ligands (along the z-axis) from an octahedral complex leads to which of the following...
JEE Main 2019 (Online) 12th April Morning Slot
The complex ion that will lose its crystal field stabilization energy upon oxidation of its metal to +3 state is : ...
JEE Main 2019 (Online) 12th April Morning Slot
The crystal field stabilization energy (CFSE) of [Fe(H2O)6]Cl2 and K2[NiCl4] respectively, are : ...
JEE Main 2019 (Online) 10th April Evening Slot
The INCORRECT statement is :
JEE Main 2019 (Online) 10th April Evening Slot
Three complexes, [CoCl(NH3)5] 2+(I), [Co(NH3)5H2O]3+ (II) and [Co(NH3)6] 3+(III) absorb light in the visible region. The...
JEE Main 2019 (Online) 10th April Morning Slot
The species that can have a trans-isomer is : (en = ehane-1, 2-diamine, ox = oxalate)
JEE Main 2019 (Online) 10th April Morning Slot
The maximum possible denticities of a ligand given below towards a common transition and inner-transition metal ion, res...
JEE Main 2019 (Online) 9th April Evening Slot
The one that will show optical activity is : (en = ethane-1,2-diamine)
JEE Main 2019 (Online) 9th April Morning Slot
The degenerate orbitals of [Cr(H2O)6]3+ are :
JEE Main 2019 (Online) 9th April Morning Slot
The calculated spin-only magnetic moments (BM) of the anionic and cationic species of [Fe(H2O)6]2 and [Fe(CN)6], respect...
JEE Main 2019 (Online) 8th April Evening Slot
The compound that inhibits the growth of tumors is :
JEE Main 2019 (Online) 8th April Evening Slot
The correct order of the spin-only magnetic moment of metal ions in the following low-spin complexes, [V(CN)6]4–,[Fe(CN)...
JEE Main 2019 (Online) 8th April Morning Slot
The following ligand is : ...
JEE Main 2019 (Online) 8th April Morning Slot
The magnetic moment of an octahedral homoleptic Mn(II) complex is 5.9 BM. The suitable ligand for this complex is -
JEE Main 2019 (Online) 12th January Evening Slot
Mn2(CO)10 is an organometallic compound due to the presence of -
JEE Main 2019 (Online) 12th January Morning Slot
The metal d-orbitals that are directly facing the ligands in K3[Co(CN)6] are -
JEE Main 2019 (Online) 12th January Morning Slot
The pair of metal ions that can give a spin only magnetic moment of 3.9 BM for the complex [M(H2O)6]Cl2, is - ...
JEE Main 2019 (Online) 12th January Morning Slot
The coordination number of Th in K4[Th(C2O4)4(OH2)2] is : (C2O$${_4^{2 - }}$$ = Oxalato)...
JEE Main 2019 (Online) 11th January Evening Slot
The number of bridging CO ligand(s) and Co-Co bond(s) in Co2(CO)8, respectively are :
JEE Main 2019 (Online) 11th January Evening Slot
Match the metals (column I) with the coordination compound(s)/enzyme(s) (column II) .tg {border-collapse:collapse;bor...
JEE Main 2019 (Online) 11th January Morning Slot
The difference in the number of unpaired electrons of a metal ion in its high spin and low-spin octahedral complexes is ...
JEE Main 2019 (Online) 10th January Evening Slot
A reaction of cobalt (III) chloride and ethylenediamine in a 1 : 2 mole ratio generates two isomeric products A (violet ...
JEE Main 2019 (Online) 10th January Evening Slot
The total number of isomers for a square planar complex [M(F)(Cl)(SCN)(NO2)] is
JEE Main 2019 (Online) 10th January Morning Slot
Which of the following is not an example of heterogenous catalytic reaction ?
JEE Main 2019 (Online) 10th January Morning Slot
Homoleptic octahedral complexes of a metal ion 'M3+' with three monodenate ligands L1, L2 and L3 adsorb wavelenths in th...
JEE Main 2019 (Online) 9th January Evening Slot
The complex that has highest crystal field splitting energy ($$\Delta $$), is :
JEE Main 2019 (Online) 9th January Evening Slot
Two complexes [Cr(H2O)6]Cl3 (A) and [Cr(NH3)6]Cl3 (B) are violet and yellow coloured, respectively. The incorr...
JEE Main 2019 (Online) 9th January Morning Slot
Which of the following complexes will shows geometrical isomerism ?
JEE Main 2018 (Online) 16th April Morning Slot
In Wilkinson's catalyst, the hybridization of central metal ion and its shape are respectively :
JEE Main 2018 (Online) 16th April Morning Slot
The total number of possible isomers for square-planar [Pt(Cl)(NO2)(NO3)(SCN)]2- is :
JEE Main 2018 (Online) 15th April Evening Slot
The correct order of spin-only magnetic moments among the following is : (Atomic number : Mn = 25, Co = 27, Ni = 28, Zn...
JEE Main 2018 (Online) 15th April Evening Slot
The correct combination is :
JEE Main 2018 (Online) 15th April Morning Slot
The oxidation states of Cr in [Cr(H2O)6]Cl3, [Cr(C6H6)2] and K2[Cr(CN)2(O)2(O2)(NH3)] respectively are ...
JEE Main 2018 (Offline)
Consider the following reaction and statements: [Co(NH3)4Br2]+ + Br- $$\to$$ [Co(NH3)3Br3] + NH3 (I) Two isomers are pro...
JEE Main 2018 (Offline)
[Co2(CO)8] displays :
JEE Main 2017 (Online) 9th April Morning Slot
The pair of compounds having metals in their highest oxidation state is :
JEE Main 2017 (Online) 8th April Morning Slot
On treatment of 100 mL of 0.1 M solution of CoCl3. 6H2O with excess AgNO3; 1.2 $$\times$$ 1022 ions are precipitated. Th...
JEE Main 2017 (Offline)
Which of the following is an example of homoleptic complex ?
JEE Main 2016 (Online) 10th April Morning Slot
Which one of the following complexes will consume more equivalents of aqueous solution of Ag(NO3) ?
JEE Main 2016 (Online) 9th April Morning Slot
Identify the correct trend given below : (Atomic No.=Ti : 22, Cr : 24 and Mo : 42)
JEE Main 2016 (Online) 9th April Morning Slot
The pair having the same magnetic moment is : [At. No.: Cr = 24, Mn = 25, Fe = 26, Co = 27]
JEE Main 2016 (Offline)
Which one of the following complexes shows optical isomerism? (en = ethylenediamine)
JEE Main 2016 (Offline)
The number of geometric isomers that can exist for square planar [Pt (Cl) (py) (NH3) (NH2OH)]+ is (py = pyridine):...
JEE Main 2015 (Offline)
The color of KMnO4 is due to:
JEE Main 2015 (Offline)
Which of the following compounds is not colored yellow?
JEE Main 2015 (Offline)
The equation which is balanced and represents the correct product(s) is:
JEE Main 2014 (Offline)
The octahedral complex of a metal ion M3+ with four monodentate ligands L1, L2, L3 and L4 absorb wavelengths in the regi...
JEE Main 2014 (Offline)
Which of the following complex species is not expected to exhibit optical isomerism?
JEE Main 2013 (Offline)
Which among the following will be named as dibromidobis (ethylene diamine) chromium(III) bromide ?
AIEEE 2012
The magnetic moment (spin only) of [NiCl4]2− is
AIEEE 2011
Which of the following facts about the complex [Cr (NH3)6 ]Cl3 is wrong?
AIEEE 2011
Which one of the following has an optical isomer ? (en = ethylenediamine)
AIEEE 2010
A solution containing 2.675g of CoCl3. 6NH3 (molar mass = 267.5 g mol–1) is passed through a cation exchanger. The chlor...
AIEEE 2010
Which of the following pairs represents linkage isomers ?
AIEEE 2009
Which of the following has an optical isomer ?
AIEEE 2009
The coordination number and the oxidation state of the element ‘E’ in the complex [E(en)2(C2O4)]NO2 (where (en) is ethyl...
AIEEE 2008
In which of the following octahedral complexes of Co (at. no. 27), will the magnitude of $$\Delta _o$$ be the highest?
AIEEE 2008
Which one of the following has a square planar geometry?
AIEEE 2007
How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a Ca2+ ion?...
AIEEE 2006
In Fe(CO)5, the Fe – C bond possesses
AIEEE 2006
Nickel (Z = 28) combines with a uninegative monodentate ligand X– to form a paramagnetic complex [NiX4]2− . The number o...
AIEEE 2006
The IUPAC name for the complex [Co(NO)2(NH3)5]Cl2 is
AIEEE 2006
The “spin-only” magnetic moment [in units of Bohr magneton, (µB)] of Ni2+ in aqueous solution would be (Atomic number o...
AIEEE 2006
Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behaviour? (At. No. Cr = 24, ...
AIEEE 2005
Which of the following compounds shows optical isomerism?
AIEEE 2005
The value of the ‘spin only’ magnetic moment for one of the following configurations is 2.84 BM. The correct one is
AIEEE 2005
The IUPAC name of the coordination compound K3[Fe(CN)6] is
AIEEE 2005
The oxidation state of Cr in [Cr(NH3)4Cl2]+ is
AIEEE 2005
Among the properties (a) reducing (b) oxidising (c) complexing, the set of properties shown by CN– ion towards metal spe...
AIEEE 2004
The correct order of magnetic moments (spin only values in B.M.) among is (Atomic numbers: Mn = 25; Fe = 26, Co =27) ...
AIEEE 2004
The coordination number of central metal atom in a complex is determined by
AIEEE 2004
Coordination compound have great importance in biological systems. In this context which of the following statements is ...
AIEEE 2004
Which one the following has largest number of isomers? (R = alkyl group, en = ethylenediamine)
AIEEE 2004
Which one of the following complexes in an outer orbital complex?
AIEEE 2004
In the coordination compound, K4[Ni(CN)4], the oxidation state of nickel is
AIEEE 2003
One mole of the complex compound Co(NH3)5Cl3, gives 3 moles of ions on dissolution in water. One mole of the same comple...
AIEEE 2003
Ammonia forms the complex ion [Cu(NH3)4]2+ with copper ions in alkaline solutions but not in acidic solutions. What is t...
AIEEE 2003
CH3 - Mg - Br is an organometallic compound due to
AIEEE 2002
The most stable ion is
AIEEE 2002

Numerical

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Total number of relatively more stable isomer(s) possible for octahedral complex $$\left[\mathrm{Cu}(\mathrm{en})_{2}(\m...
JEE Main 2022 (Online) 28th July Morning Shift
The conductivity of a solution of complex with formula $$\mathrm{CoCl}_{3}\left(\mathrm{NH}_{3}\right)_{4}$$ corresponds...
JEE Main 2022 (Online) 27th July Morning Shift
The difference between spin only magnetic moment values of $$\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}...
JEE Main 2022 (Online) 26th July Morning Shift
Consider the following metal complexes : $$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$$ $$\left[\math...
JEE Main 2022 (Online) 25th July Morning Shift
Spin only magnetic moment ($$\mu$$s) of $${K_3}[Fe{(CN)_6}]$$ is ____________ B.M. (Nearest integer)...
JEE Main 2022 (Online) 30th June Morning Shift
In the following brown complex, the oxidation state of iron is +_____________. $${[Fe{({H_2}O)_6}]^{2 + }} + NO \to \mat...
JEE Main 2022 (Online) 30th June Morning Shift
In the cobalt-carbonyl complex : [Co2(CO)8], number of Co-Co bonds is "X" and terminal CO ligands is "Y". X + Y = ______...
JEE Main 2022 (Online) 24th June Morning Shift
If [Cu(H2O)4]2+ absorbs a light of wavelength 600 nm for d-d transition, then the value of octahedral crystal field spli...
JEE Main 2022 (Online) 25th June Morning Shift
Amongst FeCl3.3H2O, K3[Fe(CN)6] and [Co(NH3)6]Cl3, the spin-only magnetic moment value of the inner-orbital complex that...
JEE Main 2022 (Online) 25th June Evening Shift
Reaction of [Co(H2O)6]2+ with excess ammonia and in the presence of oxygen results into a diamagnetic product. Number of...
JEE Main 2022 (Online) 26th June Evening Shift
The spin-only magnetic moment value of an octahedral complex among CoCl3.4NH3, NiCl2.6H2O and PtCl4.2HCl, which upon rea...
JEE Main 2022 (Online) 26th June Morning Shift
Acidified potassium permanganate solution oxidises oxalic acid. The spin-only magnetic moment of the manganese product f...
JEE Main 2022 (Online) 27th June Morning Shift
Number of complexes which will exhibit synergic bonding amongst, $$[Cr{(CO)_6}]$$, $$[Mn{(CO)_5}]$$ and $$[M{n_2}{(CO)_{...
JEE Main 2022 (Online) 28th June Morning Shift
(a) CoCl3.4NH3, (b) CoCl3.5NH3, (c) CoCl3.6NH3 and (d) CoCl(NO3)2.5NH3. Number of complex(es) which will exist in cis-tr...
JEE Main 2022 (Online) 28th June Evening Shift
$${[Fe{(CN)_6}]^{4 - }}$$ $${[Fe{(CN)_6}]^{3 - }}$$ $${[Ti{(CN)_6}]^{3 - }}$$ $${[Ni{(CN)_4}]^{2 - }}$$ $${[Co{(CN)_6}]^...
JEE Main 2022 (Online) 28th June Evening Shift
Spin only magnetic moment of [MnBr6]4$$-$$ is _________ B.M. (round off to the closest integer)...
JEE Main 2022 (Online) 29th June Evening Shift
The sum of oxidation states of two silver ions in [Ag(NH3)2] [Ag(CN)2] complex is _____________....
JEE Main 2021 (Online) 1st September Evening Shift
The number of optical isomers possible for [Cr(C2O4)3]3$$-$$ is ____________....
JEE Main 2021 (Online) 27th August Evening Shift
1 mol of an octahedral metal complex with formula MCl3 . 2L on reaction with excess of AgNO3 gives 1 mol of AgCl. The de...
JEE Main 2021 (Online) 27th August Morning Shift
3 moles of metal complex with formula Co(en)2Cl3 gives 3 moles of silver chloride on treatment with excess of silver nit...
JEE Main 2021 (Online) 27th July Evening Shift
The number of geometrical isomers possible in triamminetrinitrocobalt (III) is X and in trioxalatochromate (III) is Y. T...
JEE Main 2021 (Online) 27th July Morning Shift
Three moles of AgCl get precipitated when one mole of an octahedral co-ordination compound with empirical formula CrCl3....
JEE Main 2021 (Online) 25th July Morning Shift
The total number of unpaired electrons present in [Co(NH3)6]Cl2 and [Co(NH3)6]Cl3 is ...
JEE Main 2021 (Online) 22th July Evening Shift
An aqueous solution of NiCl2 was heated with excess sodium cyanide in presence of strong oxidizing agent to form [Ni(CN)...
JEE Main 2021 (Online) 20th July Evening Shift
The spin-only magnetic moment value for the complex [Co(CN)6]4$$-$$ is __________ BM.[At. no. of Co = 27]...
JEE Main 2021 (Online) 20th July Morning Shift
The total number of unpaired electrons present in the complex K3[Cr(oxalate)3] is _____________.
JEE Main 2021 (Online) 18th March Morning Shift
[Ti(H2O)6]3+ absorbs light of wavelength 498 nm during a d $$-$$ d transition. The octahedral splitting energy for the a...
JEE Main 2021 (Online) 16th March Evening Shift
The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-co...
JEE Main 2021 (Online) 16th March Morning Shift
The number of stereoisomers possible for [Co(ox)2(Br)(NH3)]2$$-$$ is ___________. [ox = oxalate]...
JEE Main 2021 (Online) 26th February Evening Shift
Number of bridging CO ligands in [Mn2(CO)10] is __________.
JEE Main 2021 (Online) 26th February Morning Shift
The spin only magnetic moment of a divalent ion in aqueous solution (atomic number 29) is _________ BM.
JEE Main 2021 (Online) 25th February Evening Shift
Considering that $$\Delta $$0 > P, the magnetic moment (in BM) of [Ru(H2O)6]2+ would be _________....
JEE Main 2020 (Online) 5th September Evening Slot
The total number of coordination sites in ethylenediaminetetraacetate (EDTA4–) is _____.
JEE Main 2020 (Online) 5th September Morning Slot
The oxidation states of iron atoms in compounds (A), (B) and (C), respectively, are x, y and z. The sum of x, y and z is...
JEE Main 2020 (Online) 2nd September Morning Slot
Complexes (ML5) of metals Ni and Fe have ideal square pyramidal and trigonal bipyramidal grometries, respectively. The s...
JEE Main 2020 (Online) 8th January Evening Slot

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