Coordination Chemistry

ABC26IN0078 · The complex [Mn(H2O)6]+2 has very light pink colour. The best reason for it is [CSIR-JUNE 2011] · 2011

ABC26IN0988 · The complex [Mn(H2O)6]+2 has very light pink colour. The best reason for it is · JUNE 2011

ABC26IN0992 · Which of the following compound show a charge-transfer band? · JUNE 2011

ABC26IN0105 · An aqueous solution of [Mn(H2O)6]+2 complex is pale pink in colour. The probable reasons for it are [CSIR-DEC 2014] (A) Presence of 6A1g… · 2014

ABC26IN1051 · An aqueous solution of [Mn (H2 O)6]2+ complex is pale pink in colour. The probable reasons for it are (A) Presence of 6A1g ground state (B)… · DEC 2014

ABC26IN0114 · [MnO4]^- is deep purple in colour whereas [ReO4]^- is colourless. This is due to greater energy required for [CSIR-DEC 2015] · 2015

ABC26IN1069 · [MnO4]-is deep purple in colour whereas [ReO4]-is colourless. This is due to greater energy required for · DEC 2015

ABC26IN1089 · For [Ce (NO3)4 (OPPh3)2] from the following A. Its aqueous solution yellow-orange in B. Coordination number of Ce is ten C. It shows metal… · DEC 2016

ABC26IN0131 · Br2 with propanone forms a charge transfer complex and I2 forms triiodide anion with I^-. This implies that [CSIR-DEC 2017] · 2017

ABC26IN1137 · I2 is violet in the solid as well as in gas phase. However in acetone or ethanol, it turns brown. Choose the correct statement(s) for this… · JUNE 2019

ABC26IN1148 · For the ligand-to-metal charge-transfer (LMCT) transitions in the oxo-anions given below, the wavelength of the transitions are in the order · JUNE 2021

ABC26IN0984 · Ni (CN4)2- and Ni (Cl4)2- complex ions are : · JUNE 2011

ABC26IN0079 · The correct order of LMCT energies is: [CSIR-JUNE 2011] · 2011

ABC26IN0989 · The correct order of LMCT energies is: · JUNE 2011

ABC26IN0080 · For the complexes (A) [Ni(H2O)6]+2 (B) [Mn(H2O)6]+2 (C) [Cr(H2O)6]+3 (D) [Ti(H2O)6]+3 the ideal octahedral geometry will not be observed in… · 2011

ABC26IN0990 · For the complexes (A) [Ni(H2O)6]2+ (B) [Mn(H2O)6]2+ (C) [Cr(H2O)6]3+ (D) [Ti(H2O)6]3+ the ideal octahedral geometry will not be observed in · JUNE 2011

ABC26IN0082 · Cis and trans complexes of the type [PtA2X2] are distinguished by [CSIR-JUNE 2011] · 2011

ABC26IN0993 · Cis and trans complexes of the type [PtA2X2] are distinguished by · JUNE 2011

ABC26IN0083 · The number of possible isomers for [Ru(bpy)2Cl2] is (bpy = 2,2′- bipyridine) [CSIR-JUNE 2011] · 2011

ABC26IN0085 · The complex that absorbs light of shortest wavelength is [CSIR-DEC 2011] · 2011

ABC26IN0996 · The complex that absorbs light of shortest wavelength is · DEC 2011

ABC26IN0997 · Green coloured Ni(PPh2Et)2Br2, has a magnetic moment of 3.20 B.M. The geometry and the number of isomers possible for the complex… · DEC 2011

ABC26IN0089 · The coordination number and geometry of cerium in [Ce(NO3)6]-2 are respectively, [CSIR-DEC 2011] · 2011

ABC26IN1003 · The coordination number and geometry of cerium in [Ce (NO3)6]2- are respectively, · DEC 2011 self-practice

ABC26IN1010 · In [Mo2 (S2)6]2-, cluster the number of bridging S22- and coordination number of Mo respectively, are · DEC 2012

ABC26IN0090 · The light pink color of [Co(H2O)6]+2 and the deep blue color of [CoCl4]-2 are due to [CSIR-DEC 2012] · 2012

ABC26IN1011 · The light pink color of [Co (H2 O)6]2+ and the deep blue color of [CoCl4]2- are due to · DEC 2012

ABC26IN0091 · The number of possible isomers of [Ru(PPh3)2(acac)2] (acac = acetylacetonate) is: [CSIR-DEC 2012] · 2012

ABC26IN1012 · The number of possible isomers of [Ru (PPh3)2(acac)2](acac= acetylacetonate) is: · DEC 2012 self-practice

ABC26IN1014 · The electric dipole allowed transition in a d2 atomic system is · DEC 2012

ABC26IN1015 · Coordination number of " C " in Be2 C3 whose structure is correlated with that of CaF2 is: · DEC 2012 self-practice

ABC26IN0094 · The correct spinel structure of Co3O4 is: [CSIR-DEC 2012] · 2012

ABC26IN1017 · The correct spinel structure of Co3 O4 is: · DEC 2012

ABC26IN1019 · One of the excited states of Ti has the electric configuration [Ar] 4 s2 3 d1 4 p1. The number of microstates with zero total spin (S) for… · DEC 2012

ABC26IN1026 · Intense band at 15000 cm-1 in the UV-visible spectrum of [Bu4N]2Re2Cl8 is due to the Transition · JUNE 2013

ABC26IN0097 · The species with highest magnetic moment (spin only value) is [CSIR-JUNE 2013] · 2013

ABC26IN1028 · The species with highest magnetic moment (spin only value) is · JUNE 2013

ABC26IN0099 · The Delta t of the following complexes (A) [Co(Cl4)]2- (B) [Co(Br4)]2- (C) [Co(NCS4)]2- follows the order [CSIR-JUNE 2013] · 2013

ABC26IN1033 · Among the following, the correct combination of complex and its color is · DEC 2013

ABC26IN0101 · MnCr2O4 is likely to have a normal spinel structure because [CSIR-DEC 2013] · 2013

ABC26IN1034 · MnCr2 O4 is likely to have a normal spinel structure because · DEC 2013

ABC26IN1038 · NiBr2 reacts with (Et) (Ph2) P at -78° C in CS2 to give red compound ' A ', which upon standing at room temperature turns green to give… · JUNE 2014

ABC26IN1040 · [CoL6]3+ is red in colour whereas [CoL6′]3+ is green. L. and L′ respectively corresponds to, · JUNE 2014

ABC26IN1046 · Identify the correct statement about [Ni (H2 O)6]2+ and [Cu (H2 O)6]2+ · JUNE 2014

ABC26IN1048 · The S and L values for 15N atom respectively, are · DEC 2014

ABC26IN1055 · The three dimensional structure of compound [Co (Co (NH3)4(OH)2)3] Br6, has · DEC 2014

ABC26IN0108 · The electric-dipole allowed transition among the following is [CSIR-JUNE 2015] · 2015

ABC26IN1058 · The electric-dipole allowed transition among the following is · JUNE 2015

ABC26IN1062 · The complex [Fe(phen)2(NCS)2] (phen 1,10-phenanthroline) shows spin cross-over behaviour CFSE and at mu eff 250 and 150K, respectively are · JUNE 2015

ABC26IN1064 · The oxidizing power of [CrO4]2-, [MnO4]2- and [FeO4]2- follows the order · DEC 2015