Coordination Compounds PYQs

Match List I with List II: Choose the correct answer from the options given below :

Which one of the following is an ambidentate ligand?

Match List I with List II: Choose the correct answer from the options given below :

Which of the following are paramagnetic? A. [NiCl₄]²⁻ B. Ni(CO)₄ C. [Ni(CN)₄]²⁻ D. [Ni(H₂O)₆]²⁺ E. Ni(PPh₃)₄ Choose the correct answer from the options given below.

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:

Out of the following complex compounds, which of the compound will be having the minimum conductance in solution?

Match List I with List II. Choose the correct answer from the options given below:

Match List I with List II. Choose the correct answer from the options given below:

Given below are two statements: Statement I : Both [Co(NH₃)₆]³⁺ and [CoF₆]³⁻ complexes are octahedral but differ in their magnetic behaviour. Statement II : [Co(NH₃)₆]³⁺ is diamagnetic whereas [CoF₆]³⁻ is paramagnetic. In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements: Statement I : [Co(NH₃)₆]³⁺ is a homoleptic complex whereas [Co(NH₃)₄Cl₂]⁺ is a heteroleptic complex. Statement II : Complex [Co(NH₃)₆]³⁺ has only one kind of ligands but [Co(NH₃)₄Cl₂]⁺ has more than one kind of ligands. In the light of the above statements, choose the correct answer from the options given below:

In Lassaigne’s extract of an organic compound, both nitrogen and sulphur are present, which gives blood red colour with Fe³⁺ because of the formation of -

Homoleptic complex from the following complexes is :

Which complex compound is most stable?

The IUPAC name of the complex: [Ag(H₂O)₂][Ag(CN)₂] is:

The order of energy absorbed responsible for the colour of complexes: (A) [Ni(H₂O)₂(en)₂]²⁺ (B) [Ni(H₂O)(en)]²⁺ (C) [Ni(en)₃]²⁺ is:

Ethylenediaminetetraacetate (EDTA) ion is:

Match List-I with List-II.

Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?

Urea reacts with water to form A which will decompose to form B. B when passed through Cu²⁺(aq), deep blue colour solution C is formed. What is the formula of C from the following?

Aluminium chloride in acidified aqueous solution forms a complex 'A'. In which hybridisation state of Al is 'B'. What are 'A' and 'B', respectively?

The Crystal Field Stabilization Energy (CFSE) for $[CoCl_6]^{3-}$ is $18000\ \text{cm}^{-1}$. The CFSE for $[CoCl_4]^{2-}$ will be

The number of hydrogen bonded water molecule(s) associated with $CuSO_4\cdot5H_2O$ is:

Iron carbonyl, Fe(CO)₅ is

The type of isomerism shown by the complex [CoCl₂(en)₂] is

Which one of the following ions exhibits d-d transition and paramagnetism as well?

The geometry and magnetic behaviour of the complex [Ni(CO)₄] are

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 :

Correct increasing order for the wavelengths of absorption in the visible region for the complexes of Co³⁺ is

Pick out the correct statement with respect to [Mn(CN)₆]³⁻

HgCl₂ and I₂ both when dissolved in water containing I⁻ ions, the pair of species formed is

The correct order of the stoichiometries of AgCl formed when AgNO₃ in excess is treated with the complexes: CoCl₃·6NH₃, CoCl₃·5NH₃, CoCl₃·4NH₃ respectively is

AlF₃ is soluble in HF only in presence of KF. It is due to the formation of:

The correct increasing order of trans-effect of the following species is:

Jahn-Teller effect is not observed in high spin complexes of:

The name of complex ion, $[\mathrm{Fe(CN)_6}]^{3-}$ is:

The hybridization involved in complex $[\mathrm{Ni(CN)_4}]^{2-}$ is (Atomic number of Ni = 28):

The sum of coordination number and oxidation number of the metal M in the complex $[\mathrm{M(en)_2(C_2O_4)}]Cl$ (where en is ethylenediamine) is:

Number of possible isomers for the complex $[\mathrm{Co(en)_2Cl_2}]Cl$ will be (where en = ethylenediamine):

Which of the following complexes is:

A magnetic moment of $1.73\,BM$ will be shown by one among the following

An excess of $AgNO_3$ is added to $100\,mL$ of a $0.01\,M$ solution of dichlorotetraaquachromium(III) chloride. The number of moles of $AgCl$ precipitated would be

Red precipitate is obtained when ethanol solution of dimethylglyoxime is added to ammoniacal Ni(II). Which of the following statements is not true?

Low spin complex of (d$^6$) cation in an octahedral field will have the following energy: Δ₀ = crystal field splitting energy in octahedral field, (P) = electron pairing energy)

Which of the following carbonyls will have the strongest C$-$O bond?

Which of the following complex compounds will exhibit highest paramagnetic behaviour? (Atomic numbers: Ti = 22, Cr = 24, Co = 27, Zn = 30)

Which of the following complexes is not expected to exhibit isomerism?

Which of the following complex ions is expected to absorb visible light? (At no. Zn = 30, Sc = 21, Ti = 22, Cr = 24)

Out of $TiF_6^{2-}$ and $CoF_6^{3-}$, $Cu_2Cl_2$ and $NiCl_4^{2-}$ $(Z$ of $Ti=22$, $Co=27$, $Cu=29$, $Ni=28)$ the colourless species are:

Which of the following does not show optical isomerism? $(en =$ ethylenediamine$)$

Which of the following complexes exhibits the highest paramagnetic behaviour? (Where gly = glycine, en = ethylenediamine and bpy = bipyridyl moieties. Atomic numbers: Ti = 22, V = 23, Fe = 26, Co = 27)

On the basis of the following E° values, the strongest oxidizing agent is $$[Fe(CN)₆]⁴⁻ → [Fe(CN)₆]³⁻ + e⁻¹ ; E° = −0.35 V$$ $$Fe²⁺ → Fe³⁺ + e⁻¹; E° = −0.77 V$$

In which of the following coordination entities is the magnitude of Δo (CFSE in octahedral field) maximum? (Atomic number of Co = 27)

In the complex K[PtCl₃(C₂H₄)], has 3 chlorine atoms bonded to platinum. Why is the chlorine atom lying opposite to ethene have higher bond length?

The empirical formula of an insoluble compound is PtCl₂·(NH₃)₂. On treatment with AgNO₃ it gives [Pt(NH₃)₄]Cl₂ and Ag₂[PtCl₄]. What is the molecular formula of the compound?

For octahedral complexes, explain the spin magnetic moments acquired by d⁵ and d⁶ metal ions when Δ₀ > P (strong-field) and Δ₀ < P (weak-field).

Copper sulphate dissolves in excess of KCN to give:

[Co(NH₃)₄(NO₂)₂]Cl exhibits:

[Cr(H₂O)₆]Cl₃ (at. no. of Cr = 24) has a magnetic moment of 3.83 BM. The correct distribution of 3d electrons in the chromium of the complex is:

Which one of the following is an inner orbital complex as well as diamagnetic in behaviour? (Atomic numbers: $Zn = 30$, $Cr = 24$, $Co = 27$, $Ni = 28$)

Which one of the following is expected to exhibit optical isomerism? $(en = ethylenediamine)$