ABC26IN0397 · The experimentally observed magnetic moment value, which match well with the spin-only values for the pair of aqueous ions is (Atomic… · 2005-2021self-practice
ABC26IN0398 · A complex is composed of one chromium ion, three bromides and six water molecules. Upon addition of excess AgNO3, 1.0 g aqueous solution of… · 2005-2021self-practice
ABC26IN0399 · The rate of the following redox reaction is slowest when X is [Co^ III (NH3 )5 X ]3+/ 2++ [Cr^ II (H2 O )6 ]2+ [Co^ II (NH3 )5 (H2 O ) ]2++… · 2005-2021self-practice
ABC26IN0400 · Among the following compounds, a normal spinel is · 2005-2021self-practice
ABC26IN0401 · The maximum numbewr of microstates for d2 electronic configuration is ____ · 2005-2021
ABC26IN0402 · In the electronic absorption spectrum of an aqueous solution of [Ni (NH3 )6 ]2+, a very weak band is observed between the bands due to the… · 2005-2021
ABC26IN0403 · The reaction of NiBr2 with two equivalents of PPh3 in CS2 at -78 C gives a red-colored diamagnetic complex. [NiBr2 (PPh3 )2 ]. This… · 2005-2021
ABC26IN0404 · The rate of the substitution reaction of [Co(CN)5 Cl ]3- with OH-to give [Co(CN)5(OH) ]3- · 2005-2021
ABC26IN0405 · The yellow color of an aqueous solution of K2 CrO4 changes to red-orange upon the addition of a few drops of HCl. The red-orange complex… · 2005-2021self-practice
ABC26IN0406 · The 0 of [Cr (H2 O )6 ]3+, [CrF6 ]3- and [Cr(CN)6 3- . follows the order: · 2005-2021
ABC26IN0407 · The spin-only magnetic moment of [Co (H2 O )6 ]2+ (rounded off to one decimal place) is ____ BM. · 2005-2021
ABC26IN0408 · The correct order of increasing intensity (molar absorptivity) of the UV-visible absorption bands for the ions [Ti (H2 O )6 ]3+, [Mn (H2 O… · 2005-2021
Crystal Field Theory
ABC26IN0075 · According To Crystal Field Theory, Ni2+ can two have unpaired electrons in · 2011
ABC26IN0985 · According To Crystal Field Theory, Ni2+ can two have unpaired electrons in · JUNE 2011
ABC26IN0092 · The total number of Cu-O bonds present in the crystalline copper(II) acetate monohydrate is: · 2012
ABC26IN1013 · The total number of Cu-O bonds present in the crystalline copper(II) acetate monohydrate is: · DEC 2012
ABC26IN0096 · Silica gel contains [Co (Cl4 ) ]2- as an indicator. When activated, silica gel becomes dark blue while upon absorption of moisture, its… · 2013
ABC26IN1025 · Silica gel contains [Co (Cl4 ) ]2- as an indicator. When activated, silica gel becomes dark blue while upon absorption of moisture, its… · JUNE 2013
ABC26IN1065 · Using crystal field theory, identify from the following complex ions that shows same (spin only) values (A) [CoF6 ]3- (B) [IrCl6 ]3- (C)… · DEC 2015
ABC26IN1152 · For trigonal bipyramidal coordination complex (ML5) the correct point group symmetry and the relative order of the energies of the 3d… · JUNE 2021
Electron Transfer Redox
ABC26IN0076 · The term symbol of a molecule with electronic configuration: (1 sigma g)2(1 sigma u)2(2 sigma g)2(2 sigma u)2(1 pi u)1(1 pi u)1 is: · 2011
ABC26IN0986 · The term symbol of a molecule with electronic configuration: (1)2(1)2(2)2(2)2(1)1(1)1 is: · JUNE 2011
ABC26IN0077 · Consider two redox pairs: (1) Cr(II)/Ru(III) (2) Cr(II)/Co(III) The rate of acceleration in going from a outer-sphere to a inner-sphere… · 2011
ABC26IN0987 · Consider two redox pairs: (1) Cr(II)/Ru(III) (2) Cr(II)/Co(III) The rate of acceleration in going from a outer-sphere to a inner-sphere… · JUNE 2011
ABC26IN0086 · Observe the following electronic transition of a diatomic molecule. arrayl (a)\; 1+ 3+ \\ (b)\; 1+ 1+ \\ (c)\; 1 1+ \\ (d)\; 1 1+ array The… · 2011
ABC26IN0998 · Observe the following electronic transition of a diatomic molecule. (A) 1+ 3+ (B) 1+ 1+ (C) 1 1+ (D) 1 1+ The allowed transitions are · DEC 2011
ABC26IN0087 · The electronic spectrum of [CrF6 ]3- shows three bands at 14,900 cm-1, 22400 cm-1 and 34,800 cm-1. The value of in this case is: · 2011
ABC26IN0999 · The electronic spectrum of [CrF6 ]3- shows three bands at 14,900 cm-1, 22400 cm-1 and 34,800 cm-1. The value of in this case is: · DEC 2011
ABC26IN1002 · For the following outer sphere electron transfer reactions. arrayl [Co (NH3 )6 ]2++ [Co* (NH3 )6 ]3+ [Co (NH3 )6 ]3++ [Co* (NH3 )6 ]2+ \\… · DEC 2011
ABC26IN1005 · The correct d-electron configuration showing spin-orbit coupling is · JUNE 2012
ABC26IN1006 · The nucleophilic attack on olefins under mild conditions: · JUNE 2012
ABC26IN1008 · The number of microstates for d5 electron configuration is: · JUNE 2012
ABC26IN1009 · The set of allowed electronic transitions among the following is: (A) 4 Sigma 2 (B) 3 Sigma 3 (C) 1 Delta 1 Delta (D) 2 2 (E) 3 Sigma 3… · JUNE 2012self-practice
ABC26IN1022 · The electronic transition responsible for the colour of the transition metal ions is · JUNE 2013
ABC26IN0098 · Three bands in the electronic spectrum of [Cr (NH3 )6 ]3+ are due to the following transitions (A) 4A2g 4T1g (B) 4A2g 4T2g (C) 4A2g 2Eg… · 2013
ABC26IN1029 · Three bands in the electronic spectrum of [Cr (NH3 )6 ]3+ are due to the following transitions (A) 4A2g 4T1g (B) 4A2g 4T2g (C) 4A2g 2Eg… · JUNE 2013
ABC26IN0100 · An octahedral metal ion M2+ has magnetic moment of 4.0 B.M. The correct combination of metal ion and d-electron configuration is given by · 2013
ABC26IN1031 · An octahedral metal ion M2+ has magnetic moment of 4.0 B.M. The correct combination of metal ion and d-electron configuration is given by · DEC 2013
ABC26IN1032 · For an electronic configuration of two non-equivalent pi electronics [ pi 1, pi 1 ] which of the Following terms is not possible? · DEC 2013
ABC26IN0102 · Compounds K2 Ba [Cu (NO2 )6 ](A) and Cs2 Ba [Cu (NO2 )6 ](B) exhibit tetragonal elongation and tetragonal compression, respectively. The… · 2013
ABC26IN1035 · Compounds K2 Ba [Cu (NO2 )6 ] (A) and Cs2 Ba [Cu (NO2 )6 ] (B) exhibit tetragonal elongation and tetragonal compression, respectively. The… · DEC 2013
ABC26IN1041 · In its electronic spectrum, [V (H2 O )6 ]3+ exihibits two absorption bands, one at 17,800 (v1) and the second at 25, 700 (v2) cm. The… · JUNE 2014
ABC26IN1044 · Consider the second order rate constants for the following outer-sphere electron transfer arrayl [Fe(H2O)6 ]3+ / [Fe(H2O)6 ]2+ 4.0\… · JUNE 2014
ABC26IN0107 · In transition metal phosphine (M-PR3 ) complexes, the back-bonding involves donation of electrons from · 2014
ABC26IN1057 · In transition metal phosphine (M-PR3 ) complexes, the back-bonding involves donation of electrons from · JUNE 2015
ABC26IN0109 · The lowest energy-state of an atom with electronic configuration ns1 np1 has the term symbol · 2015self-practice
ABC26IN1059 · The lowest energy-state of an atom with electronic configuration ns1np1 has the term symbol · JUNE 2015
ABC26IN0110 · Match the complexes given in column I with the electronic transitions (mainly responsible for their colours) listed in column II The… · 2015
ABC26IN1060 · Match the complexes given in column I with the electronic transitions (mainly responsible for their colours) listed in column II The… · JUNE 2015
ABC26IN0112 · The term symbol for the first excited state of Be with the electronic configuration 1 s2 2 s1 3 s1 is. · 2015