Chemistry QuestionsCoordination Compounds Questions for CBSE Class 12th

Coordination Compounds Questions for CBSE Class 12th

The increasing value of the magnetic moment of the following species is I. Fe CN 6 4 − II.    Fe CN 6 3 − III.     Cr NH 3 6 3 + IV.     Ni H 2 O 6 2 +

Among (a) – (d), the complexes that can display geometrical isomerism are: a) Pt NH 3 3 Cl + b) Pt NH 3 Cl 5 − c) Pt NH 3 2 Cl NO 2 d) Pt NH 3 4 ClBr 2 +

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    Which of the following statement are correct? i) In octahedral complexes, d z 2 , d x 2 − y 2 orbitals have higher energy than d x y , d y z    a n d     d z x orbitals ii) In tetrahedral complexes, d x y , d y z , d z x orbitals have higher energy than d z 2     a n d      d x 2 − y 2 orbitals iii) The colors of complexes are due to electronic transitions from one set of d-orbitals to another set of orbitals. vi) Δ t e t r a h e d r a l = 9 4 Δ o c t a h e d r a l

    The magnetic moment of M n C N 6 3 − is 2.8 BM and that of M n B r 4 2 − is 5.9 BM. Find the hybridization and geometries of these complex ions.

    The total number of coordination sites in ethylenediamine tetraacetate (EDTA 4- ) is .

    When 1 mole of Co NH 3 3 Cl 3 is added to excess of AgNO 3 solution the weight of AgCl precipitated is

    In photography silver bromide dissolves in hypo to give

    The type of isomerism present in nitro penta-ammine chromium(III) chloride is

    Which of the following compounds exhibit geometrical isomers?

    CFSE( ∆ ) for transition metal belonging to different transition series lies in the order

    Number of isomers possible for Co ( en ) 2 Cl NO 2 Cl are

    EDTA is used for the estimation of

    The number of moles of AgCl obtained when excess of AgNO 3 is added to one mole of CoCl 3 . 4 NH 3

    Zn + 2 dissolves in excess of NaOH due to the formation of

    Which of the following has a square planar Geometry?

    Which of the following is correct arrangement of ligands in terms of filed strength

    The number of Geometrical Isomers of Co NH 3 3 NO 3 3

    The IUPAC Name of the Wilkinson’s catalyst

    Give the co-ordination number of La in the complex [La(EDTA)(H 2 O) 4 ].3H 2 O

    Complexes ( ML 5 ) of metals Ni and Fe have ideal square pyramidal and trigonal bipyramidal geometries, respectively. The sum of the 90°, 120° and 180° L-M-L angles in the two complexes is

    The isomer(s) of Co NH 3 4 Cl 2 that has a C l − Co − C l angle of 90°, is / are?

    For octahedral Mn(II) and tetrahedral Ni(II) complexes, consider the following statements: I) both the complexes can be high spin. II) Ni(II) complex can very rarely below spin. III) with strong field ligands, Mn(II) complexes can below spin. IV) aqueous solution of Mn(II) ions is yellow in colour. The correct statements are:

    The number of isomers possible for Pt en NO 2 2 is :

    The number of geometrical isomers of Co NH 3 3 NO 2 3 is

    Considering H 2 O as a weak field ligand, the number of unpaired electrons in M n H 2 O 6 2 + is

    Which of the following has shortest C – O bond ?

    Identify the correct order of wavelength of light absorbed for the following complex ions. I. Fe H 2 O 6 3 + II. Fe NH 3 6 3 + III. Fe ( CN ) 6 3 − IV ⋅ FeF 6 3 −

    The spin magnetic moment of cobalt in Hg Co ( SCN ) 4 is

    The bond length of C-O bond in carbon monoxide is 1.128 A°. The C-O bond length in Fe(CO) 5 is

    The number of isomers possible for square planar complex K 2 PdClBr 2 SCN are

    The ionization isomer of Cr H 2 O 4 Cl NO 2 Cl is

    Write the structural formula for aqua-bromo-bis(ethylenediamine) chromium (III) chloride

    Which complexes show geometrical isomerism ?

    The spin only magnetic moment value of Cr ( CO ) 6 is

    IUPAC name of K 2 Ni ( CN ) 4 is

    The primary valency of Iron in K 4 Fe CN 6 is satisfied by how many ligands

    What is magnetic moment of FeF 6 − 3 (Round off to nearest integer)

    The number of moles of KI required to prepare one mole of K 2 Hg I 4 is

    Which of the following complex is an outer orbital?

    For an octahedral complex, which of the following d-electron configuration will give maximum crystal- field stabilization energy.

    The complexes Co NH 3 6 Cr C 2 O 4 3 and Cr NH 3 6 Co C 2 O 4 3 exhibited by

    The hybridization of metal atom & geometry of complex in Ag NH 3 2 + is

    Ag + + NH 3 ⇌ Ag NH 3 + ; ​  k 1 = 3 .5 × 10 − 3 , Ag NH 3 + + NH 3 ⇌ Ag NH 3 2 + ; ​  k 2 = 1 .7 × 10 − 3 . Then, the formation constant of Ag NH 3 2 + from and is

    Which of the following is paramagnetic?

    The stabilization energy of octahedral complex with d 7 configuration in the presence of Strong field ligands Δ 0

    Correct order of magnetic moments (spin only) among the following is

    Which one of the following complexes shows optical isomerism

    The CFSE for octahedral CoCl 6 − 4 is 18000 cm − 1 . Then the CFSE for tetrahedral CoCl 4 − 2 will be

    1.502g sample of steel yields 0.259g of nickel dimethyl glyoximate Ni C 8 H 14 N 4 O 4 (Mol mass 289g). What is the percentage of nickel in the steel (At mass of Ni = 59)

    In solid CuSO 4 .5H 2 O copper is coordinated to how many water molecules

    The number of ions produced by the complex Co NH 3 4 Cl 2 Cl is

    The I.U.P.A.C. name for Fe ( CN ) 6 3 − on is

    The I.U.P.A.C. name for Ni ( CN ) 4 2 − is

    How many ions are produced from Co NH 3 6 Cl 3 in the solution ?

    Ligand with two or more points of attachment to single metal atoms are called

    Select the correct IU.P.A.C. name for Cr NH 3 3 Cl 3 complex

    The I.U.P.A.C. name for Ni ( CO ) 4 is

    Which of the following complex ion possesses dsp 2 hybridization?

    The I.U.P.A.C. name for K 3 Co NO 2 6 is

    One mole of complex compound Co(lNH 3 ) 5 Cl 3 gives 3 moles of ions on dissolution in water. One mole of are the same complex reacts with two moles of AgNO 3 to yeild two moles of AgCl (s) . The complex is

    The I.U.P.A.C. name for Ni NH 3 4 NiCl 4 is

    In the complex Pt O 2 ( en ) 2 ( Br ) 2 + , coordination number and oxidation number of platinum are

    The color of a complex compound is due to:

    In the coordination compound K 4 Ni ( CN ) 4 the oxidation state of Ni is

    Which of the following complex ion possesses sp 3 d 2 hybridization ?

    Mixture X = 0.02 mole of C o ( N H 3 ) 5 S O 4 B r and 0.02 mole of C o ( N H 3 ) 5 B r S O 4 was prepared in 2 L of solution. 1 L of mixture of X + excess A g N O 3 Y 1 L of mixture X+ excess B a C l 2 Z Sum of number of moles of Y and Z are

    The theory that can completely/properly explain the nature of bonding in Ni Co 4 is

    The IUPAC name of the complex P t NH 3 2 Cl NH 2 CH 3 Cl is:

    The number of possible optical isomers for the complexes Ma2b2 with sp3 and dsp2 hybridized metal atom, respectively, is: Note: a and b are unidentate neutral and unidentate monoanionic ligands, respectively

    The complex that can have fac- and mer- isomers is:

    The volume (in mL) of 0.125 M AgNO 3 required to quantitatively precipitate chloride ions in 0.3 g of [ Co ( NH 3 ) 6 ] Cl 3 is . M Co NH 3 6 Cl 3 = 267 .46   g/mol M AgNO 3 = 169 .87   g/mol

    The correct order of the calculated spin only magnetic moments of complexes (A) to (D) is: ( A ) Ni ( CO ) 4 ( B ) [ Ni ( H 2 O ) 6 ] Cl 2 ( C ) Na 2 [ Ni ( CN ) 4 ] ( D ) PdCl 2 ( PPh 3 ) 2

    Pd F CI Br I 2 − has n number of geometrical isomers. Then , the spin-only magnetic moment and crystal field stabilization energy [CFSE] of Fe CN 6 n − 6 respectively, are : (Note : ignore the pairing energy )

    Complex X of composition Cr H 2 O 6 CI n has a spin only magnetic moment of 3.83 BM. It reacts with AgNO 3 and shows geometrical isomerism. The IUPAC nomenclature of X is :

    The correct order of the spin-only magnetic moments of the following complexes is: (I) C r H 2 O 6 B r 2 (II) N a 4 F e C N 6 (III) N a 3 F e C 2 O 4 3 Δ 0 > P (IV) E t 4 N 2 C o C l 4

    Consider that a d 6 metal ion M 2 + forms a complex with aqua ligands, and the spin only magnetic moment of the complex is 4.90BM. The geometry and the crystal field stabilization energy of the complex is?

    The oxidation states of iron atoms in compound (A), (B) and (C), respectively, are x,y and z. The sum of x,y and z is N a 4 F e C N 5 N O S N a 4 F e O 4              F e 2 C O 9                          A                  B                                  C

    Which of the following complex does not show stereo isomerism ?

    Simplified absorption spectra of three complexes ((i), (ii) and (iii)) of M n + ion are provided below; their λ max values are marked as A, B and C respectively. The correct match between the complexes and their λ max values is: (i) M NCS 6 − 6 + n (ii) MF 6 − 6 + n (iii) M NH 3 6 n +

    The electronic spectrum of Ti H 2 O 6 3 + shows a single broad peak with a maximum at 20 , 300 cm − 1 . The crystal field stabilization energy (CFSE) of the complex ion, in kJ mol − 1 , is : 1 kJ mol − 1 = 83 .7 cm − 1

    The complex that can shown optical activity is :

    Complex A has a composition of H 12 O 6 Cl 3 Cr . If the complex on treatment with conc. H 2 SO 4 loses 13.5 % of its original mass, the correct molecular formula of A is [Given : atomic mass of Cr = 52 amu and Cl = 35 amu]

    The d-electron configuration of [ Ru ( en ) 3 ] Cl 2 and [ Fe ( H 2 O ) 6 ] Cl 2 respectively are:

    The pair in which both the species have the same magnetic moment (spin only) is :

    The molecule in which hybrid Molecular Orbitals involve only one d-orbital of the central atom is

    The Crystal Field Stabilization Energy (CFSE) of CoF 3 H 2 O 3 Δ 0 < P is

    The one that can exhibit highest paramagnetic behaviour among the following is: gly = glycinato ;    bpy = 2 ,    2 ‘ − bipyridine

    The above two compounds are

    Match the following Complex Isomerism P) N a 4 F e C N 5 N O S 1) Hydrate Q) K C r H 2 O 2 C 2 O 4 2 2) Ionisation R) C o N H 3 5 B r S O 4 3) Linkage S) C r H 2 O 6 C l 3 4) Geometrical

    The maximum possible denticities of a ligand called DOTA given below towards a common inner-transition and transition metal ion, respectively are

    Among Ni ( CO ) 4 , Ni ( CN ) 4 2 − and NiC l 4 2 −

    Co NH 3 4 NO 2 2 Cl exhibits

    The total number of isomers for a square planar complex X M F Cl SCN NO 2 is

    Which of the following exhibits geometrical isomerism

    The color of co – ordination compounds depends on the crystal field splitting. What will be the correct order of absorption of wave length of light in the visible region, for the complexes. Co NH 3 6 3 + , Co ( CN ) 6 3 − , Co H 2 O 6 3 + (A) (B) (C)

    Of the following , which ligand does not posses the name suggested by IUPAC when it acts as a ligand in complex

    Which of the following divalent metal ion form the most stable complexes?

    Match the column Column-I Column-II A) Glycinate ion p) Bidentate B) EDTA q) Hexadentate C) Oxalate r) Monodentate D) BiSulphate s) Lewis base

    The complex cis CoCl NH 3 NH 2 CH 2 CH 2 NH 2 2 2+ has an octahedral geometry. Name this complex ion according to IUPAC would be

    Which complex ion has cis and trans isomer?

    Which pair of isomers illustrates the concepts of ionization isomers ?

    Both Ni CO 4   and   Ni CN 4 2 − are diamagnetic. The hybridizations of nickel in these complexes, respectively. are

    An example of coordination isomerism is

    Which of the following involves sp 3 hybridisation ?

    Other theories explaining the bonding in coordination compounds are

    Select the correct order of CFSE ( Δ 0 ) for the ions given below

    IUPAC name of the cordination compound K 3 Fe ( CN ) 6 is

    Column – I Complex Column – II Hybidisation a) Ni ( C O ) 4 p) sp 3 b) Ni ( CN ) 4 2 − q) dsp 2 c) Fe ( CN ) 6 4 – r) sp 3 d 2 d) MnF 6 − 4 s) d 2 sp 3

    Column-I Complex Column-II Isomerism a) Co NH 3 4 Cl 2 p) Optical isomerism b) Cis Co ( en ) 2 Cl 2 q) Ionisation isomerism c) Co ( en ) 2 N O 2 Cl SCN r) Co-ordination isomerism d) Co NH 3 6 Cr ( CN ) 6 s) Geometrical isomerism

    Hardness of water is estimated by simple titration using

    The value of K 1 , K 2 are

    The primary valency of the central transition metal ion in a complex compound Cr NH 3 4 Cl 2 Cl

    Which of the following ions do not favor square planar geometry?

    Which of the following ligands are not π acceptors

    Which of the following ligands may be flexidentate ?

    Identify the incorrect statements about Cu NH 3 4 2 +

    The complex CoCl 3 .3 NH 3 ionizes to give

    Match the column Column-I Column II A) Ni CN 4 2 − p) d 2 sp 3 B) Ni CO 4 q) sp 3 d 2 C) Co en 3 3 + r) dsp 2 D) Co Br 3 Cl 3 3 − s) sp 3

    Ph 3 P 3 RhCl is a familiar catalyst used is

    Ammonium cations can be detected using the complex

    The coordination number of copper in the complex formed by adding excess of Ammonia in copper sulphate solution is

    AgCl dissolve in excess ammonia due to the formation of a soluble complex, whose formula is.

    IUPAC name of Pt NH 3 3 Br   NO 2 C l C l is

    Which of the complex will exhibit the minimum paramagnetic behavior

    Example of neutral complex compound in the following is.

    If Δ 0 < P , the correct electronic configuration of d 6 configuration

    The EAN of cobalt in the complex ion Co en 2 C l 2 + is

    The geometries of Ni ( CO ) 4 and Ni P P h 3 2 Cl 2 are

    Which of the following facts about the complex Cr NH 3 6 C l 3 is wrong.

    The ionic conductances of octahealral complexes. I) Pt C l 4   .   5 NH 3 II) Pt C l 4   .   4 NH 3 III) Pt C l 4   .   3 NH 3 IV) Pt C l 4   .   2 NH 3

    Metals those can be extracted with aqueous solution of sodium cyanide as complexes are

    Ammonium ions are detected with

    The complex k 3 Fe ( CN ) 6 should have a spin only magnetic moment of

    Ziegler – Natta catalyst is

    The volume (in ml) of 0.1 M required for complete precipitation of chloride ions present in of solution of Cr H 2 O 5 Cl  C l 2 as silver chloride is close to

    In the Fe − C O b o n d possess

    The number of donor sites in EDTA

    The magnetic moment of Cu NH 3 4 + 2 was found to be 1.73 BM. The number of unpaired electrons in the complex is.

    The primary valency of chromium in the complex ion, dichloro dioxalato chromium(III)

    Hexa aquotitanium (III) chloride is represented as

    EDTA − 4 is a

    Which doesn’t obey EAN rule

    Geometrical isomerism is observed in

    C o NH 3 4 NO 2 2 Cl exhibits

    Cis- Trans isomerism is found in square planar complexes of the molecular formula a & b   are   monodentate   lig a n ds

    Which of following is outer orbital complex

    F e F 6 − 3 has Fe atom……. Hybridized with unpaired ………electrons

    In an octahedral crystal field, the correct set of low energy orbitals are

    If Δ 0 > P the correct electronic configuration for d 4 system will be P = Pairing   energy

    In which of the following octahedral complexes of cobalt (at No. = 27) will be the Magnitude of Δ o be the highest?

    The number of moles of ions produced when one mole of potassium Ferricyanide is dissolved in water is

    The Magnetic moment of Ni C l 4 − 2 is (round off to nearest integer)

    The secondary valences of chromium in Cr en 3 Cl 3 is

    In which there is outer orbital hybridization?

    Both Geometrical and optical isomerism is shown by

    A square planar complex is formed by hybridization of which atomic orbitals?

    Identify the complexes which are expected to be colored? a) Ti NO 3 4 b) K 3 VF 6 c) Cr NH 3 6 + 3 d) Cu N CH 3 3 4 + B F 4 −

    Which of the following is a bidentate ligand

    Among the following metal carbonyl the CO bond order is lowest in

    When excess of ammonia is added to copper sulphate the deep blue colored complex is formed. The complex is

    What are the primary and secondary valencies of Cr in K 2 Cr ( CN ) 2 ( O ) 2 O 2 NH 3 complex respectively

    Which of the following species is not expected to be a ligand?

    The geometry of Ni ( CO ) 4 and Ni P Ph 3 2 Cl 2 are

    The ionization isomer of Cr H 2 O 4 ( Cl ) NO 2 Cl is

    Which of the following is a mixed salt?

    CuSO 4 reacts with KCN solution and forms

    An aqueous solution of CoCl 2 on addition of excess of concentration HCl turns blue due to formation of

    Which of the following ligand is used in treatment of lead poisoning?

    The metal ions in Hemoglobin, chlorophyll and vitamin B 12 are A, B, C respectively. Then

    Among the following ions which one has the highest paramagnetism?

    Select the correct I.U.P.A.C. name for Cr C 6 H 6 ( CO ) 3

    L.U.P.A.C. name for complex Mn π − C 5 H 5 ( CO ) 3

    Which is the pair of ambident ligands ?

    A complex involving dsp 2 -hybridization has

    The calculated value of magnetic moment of 22 Ti 3 + is

    Coordination number of Cu 2 + is …… in CuSO 4 ⋅ 5 H 2 O :

    Which of following complex has higher Δ o value ?

    Coordination number of calcium is six in

    Which of the following is a tridentate ligand ?

    Select the correct I.U.P.A.C. name for Cu NH 3 4 PtCl 4 :

    The correct order of magnetic moment (spin values in B.M.) is (Atomic no. Mn = 25, Fe = 26, Co= 27)

    The I.U.P.A.C. name of the coordination compound K 3 Fe ( CN ) 6 is

    The complex used as an anticancer agent is:

    The effective atomic number of cobalt in the complex Co NH 3 6 3 + is

    Coordination number of Ni in Ni C 2 O 4 3 4 is

    K 4 Fe ( CN ) 6 is called :

    Hybridization, shape, and magnetic moment of K 3 Co CO 3 3 are:

    The geometry of Ni ( CN ) 4 2 − and NiCl 4 2 − ions are :

    The number of geometrical isomers of Co NH 3 3 NO 3 3 is

    Co NH 3 5 NO 2 Cl 2 and Co NH 3 5 ONO Cl 2 are related to each other as:

    Select the correct I.U.P.A.C. name for PtCl 2 NH 3 4 PtCl 4 :

    In Cu-ammonia complex, the state of hybridization of Cu 2+ is

    Thenumberof σ and π – bondsin Fe 2 ( CO ) 9 , respectivley are

    EAN of Fe is … in Fe C 2 O 4 3 3 − :

    The total number of possible coordination isomer for the given compound Pt NH 3 4 Cl 2 PtCl 4 is

    Select the correct I.U.P.A.C. name for Pt NH 3 4 PtCl 4 :

    Transition metal compounds are usually colored. This is due to the electronic transition

    The compound CoCl 2 NH 3 2 ( en ) can form

    The compound PtCl 2 NH 3 2 can form

    The correct I.U.P.A.C. name for H 2 [PtCI 6 ] complex

    Amongst the following complexes, select the one having highest magnetic dipole moment

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