Coordination Compounds
19 NEET Chemistry previous year questions on Coordination Compounds — options free on every question; 2 include the answer & explanation free, the rest unlock with PYQ Pass.
Ethylene diaminetetraacetate ion is a/an
[Re-NEET 2024]
hexadentate ligand
Ethylene diaminetetraacetate ion is a hexadentate ligand.
Given below are two statements
Statement I : Both \({\left[\mathrm{Co}{\left({\mathrm{NH}}_{3}\right)}_{6}\right]}^{3+}\) and \({\left[{\mathrm{CoF}}_{6}\right]}^{3-}\) complexes are octahedral but differ in their magnetic behaviour.
Statement II : \({\left[\mathrm{Co}{\left({\mathrm{NH}}_{3}\right)}_{6}\right]}^{3+}\) is diamagnetic whereas \({\left[{\mathrm{CoF}}_{6}\right]}^{3-}\) is paramagnetic.
In the light of the above statements, choose the correct answer from the options given below
[NEET 2024]
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Given below are two statements:
Statements I : \({\left[Co{\left(N{H}_{3}\right)}_{6}\right]}^{3+}\) is a homoleptic complex whereas \({\left[Co{\left(N{H}_{3}\right)}_{4}C{l}_{2}\right]}^{+}\)is a heteroleptic complex.
Statements II : Complex \({\left[Co{\left(N{H}_{3}\right)}_{6}\right]}^{3+}\) has only one kind of ligands but \({\left[Co{\left(N{H}_{3}\right)}_{4}C{l}_{2}\right]}^{+}\) has more than one kind of ligands. In the light of the above statements, choose the correct answer from the options given below:
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The correct order of the wavelength of light absorbed by the following complexes is,
A. \({\left[\mathrm{Co}{\left({\mathrm{NH}}_{3}\right)}_{6}\right]}^{3+}\)
B. \({\left[\mathrm{Co}(\mathrm{CN}{)}_{6}\right]}^{3-}\)
C. \({\left[\mathrm{Cu}{\left({\mathrm{H}}_{2}\mathrm{O}\right)}_{4}\right]}^{2+}\)
D.\({\left[\mathrm{Ti}{\left({\mathrm{H}}_{2}\mathrm{O}\right)}_{6}\right]}^{3+}\)
Choose the correct answer from the options given below
[NEET 2025]
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Which of the following are paramagnetic?
A. \({\left[\overset{}{{\mathrm{NiCl}}_{4}}\right]}^{2-}\)
B. \(\overset{}{\mathrm{Ni}}(\mathrm{CO}{)}_{4}\)
C.\({\left[\mathrm{Ni}{\left({\mathrm{H}}_{2}\mathrm{O}\right)}_{6}\right]}^{2+}\)
D. \([{\left.\mathrm{Ni}(\mathrm{CN}{)}_{4}\right]}^{2-}\)
E.\(\mathrm{Ni}{\left({\mathrm{PPh}}_{3}\right)}_{4}\)
Choose the correct answer from the options given below
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Which of the following is not an ambidentate ligand?
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Which of the following is not an ambidentate ligand?
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A 1 : 3 electrolyte in an aqueous solution is
[Re-NEET 2026]
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Match List I with List II.
| List I (Complex) | List II (Oxidation Number of Metal) |
| A.\(\left[Ni{\left(CO\right)}_{4}\right]\) | I.+1 |
| B.\({\left[Fe{\left({H}_{2}O\right)}_{5}NO\right]}^{+2}\) | II.Zero |
| C.\({\left[Co{\left(CO\right)}_{5}\right]}^{2-}\) | III.-1 |
| D.\({\left[Cr{\left(CO\right)}_{10}\right]}^{2-}\) | IV.-2 |
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Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?
[NEET 2020]
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Which one of the following coordination compounds is used to inhibit
the growth of tumours?
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Given below are two statements:
Statement I: \(\left[ Mn ( CN )_6\right]^{3-},\left[ Fe ( CN )_6\right]^{3-}\) and \(\left[ Co \left( C _2 O _4\right)_3\right]^{3-}\) are \(d ^2 sp ^3\) hybridised
Statement II: \(\left[ MnCl _6\right]^{3-}\) and \(\left[ FeF _6\right]^{3-}\) are paramagnetic and have 4 and 5 unpaired electrons, respectively.
In the light of the above statements, choose the correct answer from the options given below:
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Which complex compound is most stable?
[NEET-2023]
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Which of the following complex will show largest splitting of d-orbitals? [JEE Main 2023, 1 Feb (Shift 1)]
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The type of hybridisation and magnetic property of the complex \(\left[ MnCl _6\right]^{3-}\), respectively, are:
[JEE Main 2021, 27 Jul (Shift 1)]
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In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment?
(i) \(\left[ FeF _6\right]^{3-}\),
(ii) \(\left[ Co \left( NH _3\right)_6\right]^{3+}\),
(iii) \(\left[ NiCl _4\right]^{2-}\),
(iv) \(\left[ Cu \left( NH _3\right)_4\right]^{2+}\)
[JEE Main 2021, 25 Feb (Shift 2)]
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Match the List-I with List-II.
| List-I (Complexes) | List-II (Hybridisation) | ||
| (A) | [Ni(CO)4] | (I) | sp3 |
| (B) | [Cu(NH3)4]2+ | (II) | dsp2 |
| (C) | [Fe(NH3)6]2+ | (III) | sp3d2 |
| (D) | [Fe(H2O)6]2+ | (IV) | d2sp3 |
Choose the correct answer from the options given below.
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Match List-I with List-II.
| List-I (Complex ion) | List-II (Electronic configuration) | ||
| (A) | \({\left[\mathrm{Cr}{\left({\mathrm{H}}_{2}\mathrm{O}\right)}_{6}\right]}^{3+}\) | (I) | t2g2eg0 |
| (B) | \({\left[\mathrm{Fe}{\left({\mathrm{H}}_{2}\mathrm{O}\right)}_{6}\right]}^{3+}\) | (II) | t2g3eg0 |
| (C) | \({\left[\mathrm{Ni}{\left({\mathrm{H}}_{2}\mathrm{O}\right)}_{6}\right]}^{2+}\) | (III) | t2g3eg2 |
| (D) | \({\left[\mathrm{V}{\left({\mathrm{H}}_{2}\mathrm{O}\right)}_{6}\right]}^{3+}\) | (IV) | t2g6eg0 |
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