Coordination Chemistry

ABC26IN1066 · The correct statement for Mn-O bond lengths in [Mn (H2 O)6]2+, is · DEC 2015

ABC26IN1067 · Identify the complex ions in sequential order when ferroin is used as an indicator in the titration of iron(II) with potassium dichromate… · DEC 2015

ABC26IN0113 · The formation constant for the complexation of M+ (M = Li, Na, K and Cs) with cryptand, C222 follows the order [CSIR-DEC 2015] · 2015

ABC26IN0115 · The symmetry-allowed atomic transition among the following is [CSIR-DEC 2015] · 2015

ABC26IN1075 · The symmetry-allowed atomic transition among the following is · DEC 2015 self-practice

ABC26IN0116 · [NiIIL6]n+ or n- shows absorption bands at 8500, 15400, and 26000 cm-1 whereas [NiIIL'6]n+ or n- at 10750, 17500 and 28200 cm-1. L and L'… · 2015

ABC26IN1076 · [NiII L6]n+ or n- shows absorption bands at 8500, 15400, and 26000 cm-1 whereas [NiII L'6]n+ or n- at 10750, 17500 and 28200 cm-1. L and L'… · JUNE 2016 self-practice

ABC26IN0119 · The first excited state of hydrogen molecule is [CSIR-JUNE 2016] · 2016

ABC26IN1080 · The first excited state of hydrogen molecule is · JUNE 2016

ABC26IN0120 · Complex [Cr(bipyridyl)3]+3, shows red phosphorescence due to transition [CSIR-JUNE 2016] · 2016

ABC26IN1081 · Complex [Cr(bipyridyl)3]3+, shows red phosphorescence due to transition · JUNE 2016

ABC26IN1084 · The room temperature magnetic moment (in BM) for a monomeric Cu (II) complex is greater than 1.73. This may be explained using the… · JUNE 2016

ABC26IN1086 · In the hydrolysis of trans-[Co(en)2Cl(A)]+ if the leaving group is chloride, the formation of cis product is the least, when A is · DEC 2016

ABC26IN0122 · The nephelauxetic parameter beta is highest for [CSIR-DEC 2016] · 2016

ABC26IN1087 · The nephelauxetic parameter beta is highest for · DEC 2016

ABC26IN1090 · Consider the following statements for [FeO4]4- A. It is paramagnetic B. It has Td symmetry C. Adopts distorted square planar geometry D… · DEC 2016

ABC26IN0126 · The relative rates of water exchange for the hydrated complexes of (1) Ni+2 (2) V+2 and (3) Cr3+ ions follows the trend: [CSIR-JUNE 2017] · 2016

ABC26IN1097 · The relative rates of water exchange for the hydrated complexes of (1) Ni2+ (2) V2+ and (3) Cr3+ ions follows the trend: · JUNE 2017

ABC26IN1102 · For the following complexes, the increasing order of magnetic moment (spin only value) is A. [TiF6]-3 B. [CrF6]-3 C. [MnF6]-3 D. [CoF6]-3 · DEC 2017

ABC26IN0128 · The geometry around Cu and its spin state for K3CuF6 and KCuL2, [H2L = H2NCONHCONH2], respectively are: [CSIR-DEC 2017] · 2017

ABC26IN1103 · The geometry around Cu and its spin state for K3CuF6 and KCuL2, [H2L=H2NCONHCONH2], respectively are: · DEC 2017

ABC26IN0130 · For high spin and low spin d6 octahedral complexes (ML6), the generally observed spin allowed transitions respectively, are [CSIR-DEC 2017] · 2017

ABC26IN1106 · For high spin and low spin d6 octahedral complexes (ML6), the generally observed spin allowed transitions respectively, are · DEC 2017

ABC26IN1110 · High spin complex of a 3d metal ion M has a magnetic moment of 2.9 B.M. in octahedral coordination environment and 4.1 B.M. in tetrahedral… · JUNE 2018

ABC26IN1113 · Consider the following statements: (A) Cr2+ is easier to oxidize than V2+ in the gas phase (B) Cr2+ (aq) is a more powerful reducing agent… · JUNE 2018

ABC26IN1116 · Consider the species NO, I2, I2-, Cu2+ and VO2+. The number of paramagnetic species among them and the EPR inactive species, respectively… · DEC 2018

ABC26IN1118 · For magnesium complex of EDTA2-, the number of N-donor and O-donor centers, are respectively. · DEC 2018

ABC26IN1120 · The correct order of intensity of the d-d transitions in the complexes of a 3d-transition metal ion · DEC 2018

ABC26IN0143 · The correct set of information is [CSIR-JUNE 2019] · 2019

ABC26IN1125 · The correct set of information is · JUNE 2019

ABC26IN0145 · Hydrolysis of trans-[CoLCl(en)2]^+ (L = NO2^-, NCS^-, OH^-, Cl^-) results in a product (A). The tendency to form cis-isomer of the product… · 2019

ABC26IN1130 · Correct order of molar extinction coefficient values of the visible absorption bands for the following species is · JUNE 2019

ABC26IN0149 · FeCr2O4 and NiGa2O4 have normal and inverse spinel structures, respectively. The correct statement is [CSIR-DEC 2019] · 2019

ABC26IN1132 · FeCr2 O4 and NiGa2 O4 have normal and inverse spinel structures, respectively. The correct statement is · JUNE 2019

ABC26IN1133 · The correct match of spin-only magnetic moment for the complexes cis- [Fe(phen)2(NCS-N)2] (A) and [Fe(phen)3]Cl2 (B) at 300 K is (phen… · JUNE 2019

ABC26IN0153 · The number of geometrical isomers of the complex [RhH(C≡CR)2(PMe3)3] is [CSIR-2020] · 2019

ABC26IN1136 · The number of geometrical isomers of the complex [RhH(C ≡ CR)2 (PMe3)3] is · JUNE 2019

ABC26IN1142 · The value of magnetic moment will be independent of temperature for(acac = acetylacetonato; OAc = acetate; o-phen = o-phenathroline; Pz =… · JUNE 2019

ABC26IN0157 · The calculated heat of formation (Delta Hf) for NaCl2 and CaF is [CSIR-2020] · 2020 self-practice

ABC26IN1145 · The calculated heat of formation (Delta Hf) for NaCl2 and CaF is · JUNE 2019

ABC26IN0599 · Among the following complexes, (i) [Ru(bipyridyl)3]+ (ii) [Cr(EDTA)]- (iii) trans- [CrCl2 (oxalate) 2]3- (iv) cis- [CrCl2 (oxalate) 2]3-… · 2005-2022

ABC26IN0600 · The crystal field stabilization energy of high spin d7 octahedral complex is · 2005-2022

ABC26IN0602 · The complex with the most intense colour among the following is · 2005-2022

ABC26IN0604 · The octahedral crystal field splitting (Delta 0) of d orbital energies of the following metal ions decreases in the order · 2005-2022

ABC26IN0605 · The optical absorption spectrum of [Ti (H2 O)6]3+ has its absorption maximum at 20300 cm-1. The magnitude of crystal field stabilization… · 2005-2022

ABC26IN0608 · The ligand with only sigma (sigma) bonding character is · 2005-2022

ABC26IN0611 · For tetrahedral complexes, which always exhibit high spin states, the maximum CFSE (crystal field stabilization energy) is: · 2005-2022

ABC26IN0615 · Which one of the following configuration will show Jahn-Teller distortion in an octahedral field? · 2005-2022

ABC26IN0616 · The colour of potassium dichromate is due to · 2005-2022

ABC26IN0617 · Addition of an aqueous solution of Fe(II) to potassium hexacyanochromate (III) produces a brick-red coloured complex, which turn dark green… · 2005-2022