Which of the following are paramagnetic?
A. \([\mathrm{NiCl_4}]^{2-}\) B. \(\mathrm{Ni(CO)_4}\) C. \([\mathrm{Ni(CN)_4}]^{2-}\) D. \([\mathrm{Ni(H_2O)_6}]^{2+}\) E. \(\mathrm{Ni(PPh_3)_4}\)
Choose the correct answer from the options given below:
Coordination Compounds
Every question from past board papers on Coordination Compounds, newest paper first. Open any question for its full worked answer.
NEET UG 2025 question paper (official, booklet 45)
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The correct order of the wavelength of light absorbed by the following complexes is,
A. \([\mathrm{Co(NH_3)_6}]^{3+}\) B. \([\mathrm{Co(CN)_6}]^{3-}\) C. \([\mathrm{Cu(H_2O)_4}]^{2+}\) D. \([\mathrm{Ti(H_2O)_6}]^{3+}\)
Choose the correct answer from the options given below:
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Out of the following complex compounds, which of the compound will be having the minimum conductance in solution?
NEET UG 2024 question paper (official, booklet S6)
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Given below are two statements :
Statement I : Both \([Co(NH_3)_6]^{3+}\) and \([CoF_6]^{3-}\) complexes are octahedral but differ in their magnetic behaviour.
Statement II : \([Co(NH_3)_6]^{3+}\) is diamagnetic whereas \([CoF_6]^{3-}\) is paramagnetic.
In the light of the above statements, choose the correct answer from the options given below:
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Match List I with List II.
List I (Complex): A. \([Co(NH_3)_5(NO_2)]Cl_2\) B. \([Co(NH_3)_5(SO_4)]Br\) C. \([Co(NH_3)_6][Cr(CN)_6]\) D. \([Co(H_2O)_6]Cl_3\)
List II (Type of isomerism): I. Solvate isomerism II. Linkage isomerism III. Ionization isomerism IV. Coordination isomerism
Choose the correct answer from the options given below:
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Given below are two statements :
Statement I : \([Co(NH_3)_6]^{3+}\) is a homoleptic complex whereas \([Co(NH_3)_4Cl_2]^+\) is a heteroleptic complex.
Statement II : Complex \([Co(NH_3)_6]^{3+}\) has only one kind of ligands but \([Co(NH_3)_4Cl_2]^+\) has more than one kind of ligands.
In the light of the above statements, choose the correct answer from the options given below:
NEET UG 2023 question paper (official, booklet G6)
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Homoleptic complex from the following complexes is :
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Which complex compound is most stable?
NEET UG 2022 question paper (official, booklet R6)
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The IUPAC name of the complex -
\([Ag(H_2O)_2][Ag(CN)_2]\) is :
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The order of energy absorbed which is responsible for the color of complexes
(A) \([Ni(H_2O)_2(en)_2]^{2+}\)
(B) \([Ni(H_2O)_4(en)]^{2+}\) and
(C) \([Ni(en)_3]^{2+}\)
is
NEET UG 2021 question paper (official, booklet M4)
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Ethylene diaminetetraacetate (EDTA) ion is :
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Match List - I with List - II.
List - I : (a) \([Fe(CN)_6]^{3-}\) (b) \([Fe(H_2O)_6]^{3+}\) (c) \([Fe(CN)_6]^{4-}\) (d) \([Fe(H_2O)_6]^{2+}\)
List - II : (i) 5.92 BM (ii) 0 BM (iii) 4.90 BM (iv) 1.73 BM
Choose the correct answer from the options given below.
NEET UG 2020 question paper (official, booklet E1)
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Which of the following is the correct order of increasing field strength of ligands to form coordination compounds ?
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Urea reacts with water to form A which will decompose to form B. B when passed through Cu\(^{2+}\) (aq), deep blue colour solution C is formed. What is the formula of C from the following ?
NEET UG 2019 question paper (official, booklet P1)
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What is the correct electronic configuration of the central atom in K\(_4\)[Fe(CN)\(_6\)] based on crystal field theory ?
NEET UG 2018 question paper (official, booklet EE)
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The type of isomerism shown by the complex [CoCl\(_2\)(en)\(_2\)] is
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Which one of the following ions exhibits d-d transition and paramagnetism as well ?
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Iron carbonyl, Fe(CO)\(_5\) is
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Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code :
Column I: a. Co\(^{3+}\); b. Cr\(^{3+}\); c. Fe\(^{3+}\); d. Ni\(^{2+}\)
Column II: i. \(\sqrt{8}\) B.M.; ii. \(\sqrt{35}\) B.M.; iii. \(\sqrt{3}\) B.M.; iv. \(\sqrt{24}\) B.M.; v. \(\sqrt{15}\) B.M.
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The geometry and magnetic behaviour of the complex [Ni(CO)\(_4\)] are
NEET UG 2017 question paper (official, booklet B)
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An example of a sigma bonded organometallic compound is :
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Pick out the correct statement with respect to \([Mn(CN)_6]^{3-}\) :
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The correct order of the stoichiometries of AgCl formed when \(AgNO_3\) in excess is treated with the complexes : \(CoCl_3.6NH_3\), \(CoCl_3.5NH_3\), \(CoCl_3.4NH_3\) respectively is :
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Correct increasing order for the wavelengths of absorption in the visible region for the complexes of \(Co^{3+}\) is :
NEET UG 2016 Phase 1 question paper (official, booklet A)
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Which of the following has longest C-O bond length ? (Free C-O bond length in CO is \(1.128\ \AA\).)
NEET UG 2016 Phase 2 question paper (official, booklet ZZ)
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The correct increasing order of \(trans\)-effect of the following species is
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Jahn-Teller effect is not observed in high spin complexes of