Coordination Compounds — practice questions

84 curated practice questions from Coordination Compounds (Chemistry JEE Advanced, NTA Exams) — 52 hard, 32 medium. Every question includes the final answer free; step-by-step worked solutions with a free account.

• The IUPAC name for [Co(NH 3 ) 6 ] [Cr(CN) 6 ] is
• The d electronic configurations of Cr 2+ , Mn 2+ , Fe 2+ and Ni 2+ are 3d 4 , 3d 5 , 3d 6 and 3d 8 respectively. Which…
• Assertion (A): Oxidation state of Fe in Fe(CO) 5 is zero. Reason (R): Synergic bonding takes place in this metal…
• If the bond length of CO bond in carbon monoxide is 1.128 Å, then what is the value of CO bond length in Fe (CO) 5 ?
• Which of the following is an organometallic compound?
• The pair(s) of complexes wherein both exhibit tetrahedal geometry is(are) (Note: py = pyridine Given: Aomic numbers of…
• Valence bond theory successfully explains the magnetic behaviour of complexes. The substances which contains unpaired…
• Which kind of isomerism is exhibited by octahedral [Co (NH 3 ) 4 Br 2 ] Cl ? (2005)
• Assertion(A): [Fe(H 2 O) 5 NO]SO 4 is paramagnetic Reason(R): The Fe in [Fe (H 2 O) 5 NO] SO 4 has three unpaired…
• NiCl 2 P(C 2 H 5 ) 2 (C 6 H 5 ) 2 exhibits temperature dependent magnetic behaviour (paramagnetic/diamagnetic). The…
• The IUPAC name for [(CO) 3 Fe(CO) 3 Fe(CO) 3 ] is
• In an experiment, m grams of a compound X (gas/liquid/solid) taken in a container is loaded in a balance as shown in…
• The complex(es), which can exhibit the type of isomerism shown by [Pt(NH 3 ) 2 Br 2 ], is(are) [ en = H 2 NCH 2 CH 2 NH…
• Mixture X = 0.02 mole of [Co (NH 3 ) 5 SO 4 ] Br and 0.02 mole of [Co(NH 3 ) 5 Br] SO 4 was prepared in 2L of solution…
• The spin only magnetic moment value (in Bohr magneton units) of Cr (CO) 6 is (2009)
• In the following reaction sequence in aqueous solution, the species X, Y and Z , respectively,
• Both [Ni (CO) 4 ] and [Ni (CN) 4 ] 2– are diamagnetic. The hybridisations of nickel in these complexes, respectively…
• The formula of the complex potassium trichloro (ethylene) platinate (II) is
• The complex ion which has no d electrons in the central metal atom is
• The IUPAC name for [Pt(py) 4 ] [PtCl 4 ] is
• Valence bond theory successfully explains the magnetic behaviour of complexes. The substances which contains unpaired…
• The complex showing a spin-only magnetic moment of 2.82 B.M. is
• The pair (s) of coordination complexes/ions exhibiting the same kind of isomerism is (are) (2013)
• Geometrical shapes of the complexes formed by the reaction of Ni 2 + with Cl – , CN – and H 2 O, respectively, are
• Consider the following complex ions, P , Q and R . P = [FeF 6 ] 3 – , Q = [V(H 2 O) 6 ] 2 + and R = [Fe(H 2 O) 6 ] 2 +…
• The ionisation isomer of [Cr(H 2 O) 4 Cl(NO 2 )]Cl is
• The coordination number of Ni 2+ is 4 . NiCl 2 + KCN (excess) → A (cyano complex) A + conc. HCl (excess) → B (chloro…
• Assertion (A): Hydrazine is a neutral ligand. Reason (R): It has two N as donor atoms and behaves as a chelating ligand.
• The reaction of K 3 [Fe(CN) 6 ] with freshly prepared FeSO 4 solution produces a dark blue precipitate called…
• The complex(es), which can exhibit the type of isomerism shown by [Pt(NH 3 ) 2 Br 2 ], is(are) [en = H 2 NCH 2 CH 2 NH…
• The compound(s) that exhibit(s) geometrical isomerism is (are ) (2009)
• Valence bond theory successfully explains the magnetic behaviour of complexes. The substances which contains unpaired…
• The coordination number of Ni 2 + is 4 NiCl 2 + KCN (excess) → A (cyano complex) A + conc. HCl (excess) → B (chloro…
• The geometry of the compound [ Pt ( NH _ 3 )_ 2 Cl _ 2 ] is
• As per IUPAC nomenclature, the name of the complex [Co(H 2 O) 4 (NH 3 ) 2 ]Cl 3 is
• The geometries of the ammonia complexes of Ni 2 + , Pt 2 + and Zn 2 + , respectively, are
• The correct statement(s) regarding the binary transition metal carbonyl compounds is (are) (Atomic numbers : Fe = 26…
• Which compound is formed when excess of KCN is added to aqueous solution of copper sulphate?
• The IUPAC name for [(NH 3 ) 5 Cr – (OH) – Cr(NH 3 ) 5 ] 5+ is
• The formula of the complex triammine trinitrocobalt (III) is
• The IUPAC name of [Ni(NH 3 ) 4 ] [NiCl 4 ] is (2008)
• Which is correct in the case of [ Fe ( CN )_ 6 ]^ 4- complex ?
• Among [Ni(CO) 4 ], [NiCl 4 ] 2 – , [Co(NH 3 ) 4 Cl 2 ]Cl, Na 3 [CoF 6 ], Na 2 O 2 and CsO 2 , the total number of…
• Both [Ni(CO) 4 ] and [Ni(CN) 4 ] 2 – are diamagnetic. The hybridisations of nickel in these complexes, respectively, are
• The IUPAC name for [(CO) 5 Mn-Mn(CO) 5 ] is
• Among the following complexes ( K – P ), K 3 [Fe(CN) 6 ]( K ), [Co(NH 3 ) 6 ]Cl 3 ( L ), Na 3 [Co (oxalate) 3 ]( M )…
• In nitroprusside ion, the iron and NO exist as Fe II and NO + rather than Fe III and NO. These forms can be…
• The complex ion which has no d electrons in the central metal atom is (2001)
• The calculated spin magnetic of [ Cr ( NH _ 3 )_ 6 ]^ 3+ and [ CuF _ 6 ]^ 3- in BM, respectively, are (Atomic numbers…
• The IUPAC name for [Be 4 O(CH 3 COO) 6 ] is
• Choose the correct statement(s) among the following.
• The IUPAC name for [Co(ONO) (NH 3 ) 5 ]SO 4 is
• The geometry of Ni(CO) 4 and Ni(PPh 3 ) 2 Cl 2 are
• Assertion(A): The geometrical isomers of the complex [M(NH 3 ) 4 Cl 2 ] are optically inactive. Reason(R): Both…
• Amongst Ni(CO) 4 , [Ni(CN) 4 ] 2 – and NiCl 4 2 – ,
• An aqueous solution of metal ion M 1 reacts separately with reagents Q and R in excess to give tetrahedral and square…
• The correct structure of ethylenediaminetetraacetic acid (EDTA) is
• NiCl 2 [P(C 2 H 5 ) 2 (C 6 H 5 )] 2 exhibits temperature dependent magnetic behaviour (paramagnetic/diamagnetic) the…
• As per IUPAC nomenclature, the name of the complex [Co(H 2 O) 4 (NH 3 ) 2 ] Cl 3 is (2012)
• The magnetic moment of a complex is 2.83 BM. The complex ion is
• The reaction of Pb(NO 3 ) 2 and NaCl in water produces a precipitate that dissolves upon the addition of HCl of…
• Statement-1 : [Fe(H 2 O) 5 NO]SO 4 is paramagnetic. S tatement-2 : The Fe in [Fe(H 2 O) 5 NO]SO 4 has three unpaired…
• Which kind of isomerism is exhibited by octahedral Co(NH 3 ) 4 Br 2 Cl?
• The brown ring complex compound is formulated as [Fe(H 2 O) 5 (NO)]SO 4 . The oxidation state of iron is
• The IUPAC name of [Ni(NH 3 ) 4 ][NiCl 4 ] is
• Statement-1 : The geometrical isomers of the complex [ M (NH 3 ) 4 Cl 2 ] are optically inactive. Statement-2 : Both…
• Which of the following is correct arrangement of ligands in terms of the Dq values of their complexes with any…
• The coordination number of Ni 2+ is 4 . NiCl 2 + KCN (excess) → A (cyano complex) A + conc. HCl (excess) → B (chloro…
• Among the following options, select the option in which each complex in Set-I shows geometrical isomerism and the two…
• Valence bond theory successfully explains the magnetic behaviour of complexes. The substances which contains unpaired…
• Mixture X containing 0.02 mol of [Co(NH 3 ) 5 SO 4 ]Br and 0.02 mol of [Co(NH 3 ) 5 Br]SO 4 was prepared in 2 litre of…
• Complex ions [NiCl 6 ] 4– , [Ni(CN) 6 ] 4– similar in their given properties :
• The coordination number of Ni 2+ is 4 . NiCl 2 + KCN (excess) → A (cyano complex) A + conc. HCl (excess) → B (chloro…
• The IUPAC name for [Co(NCS)(NH 3 ) 5 ]Cl 2 is
• Complex compound [Co(SCN) 2 (NH 3 ) 4 ]Cl exhibits :
• Assertion (A): Zeise’s salt is a π-bonded organometallic compound. Reason (R): Zeise’s salt contain C 2 H 4 molecules…
• For which of the following d n configuration of octahedral complex(es), cannot exist in both high spin and low spin…
• The correct order of the wavelength maxima of the absorption band in the ultraviolet-visible region for the given…
• Assertion (A): [Ti(H 2 O) 6 ] 4+ is coloured while [Sc(H 2 O) 6 ] 3+ is colourless. Reason (R): d-d transition is not…
• Spin only magnetic moment of the compound Hg[Co(SCN) 4 ] is (2004)
• Among [NiCO) 4 ], [NiCl 4 ] 2– , [Co(NH 3 ) 4 Cl 2 ] Cl, Na 3 [CoF 6 ], Na 2 O 2 and CsO 2 , the total number of…
• Among the following options, select the option in which each complex in Set-I shows geometrical isomerism and the two…
• Assertion (A): [CoCl 3 (NH 3 ) 3 ] does not give white precipitate with AgNO 3 solution. Reason (R): [CoCl 3 (NH 3 ) 3…
• Valence bond theory successfully explains the magnetic behaviour of complexes. The substances which contains unpaired…

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