ABC26IN1172 · The correct order of the isomeric shift in Mössbauer spectra (57Fe source) of iron compounds is · JUNE 2014
ABC26IN1179 · The numbers of lines shown by the BH3 part of the molecule Ph3 P . 11 BH3 in the 1 H and 11 B NMR spectra are, respectively [I ( 11 B )=3 /… · JUNE 2016
ABC26IN0164 · The expected number of 19F NMR spectral lines, including satellites, for [XeF5]^- is [Abundance of 129Xe\,(I=1/2)=26\% ] · DEC 2016
ABC26IN1181 · The expected number of 19 F NMR spectral lines, including satellites, for [XeF5 ]-is [Abundance of 129 Xe(I=1 / 2)=26 \% ] · DEC 2016
Inorganic Spectroscopy – General
ABC26IN0158 · In the EPR spectrum of tetragonal Cu(II) complex, when g > g > ge, the unpaired electron resides in the orbital. · JUNE 2011
ABC26IN1153 · In the EPR spectrum of tetragonal Cu(II) complex, when g > g > ge, the unpaired electron resides in the orbital. · JUNE 2011
ABC26IN1154 · Consider the compounds, (A) SnF4(B) SnCl4 and (C) R3 SnCl. The nuclear quadrupole splitting are observed for. · JUNE 2011
ABC26IN1156 · In the 19 F NMR spectrum of PF5, the number of signals and multiplicity, at room temperature are · DEC 2011
ABC26IN0159 · The metal complex that exhibits a triplet as well as doublet in its 31P NMR spectrum is · JUNE 2012
ABC26IN1159 · The metal complex that exhibits a triplet as well as doublet in its 31P NMR spectrum is · JUNE 2012
ABC26IN1160 · The total numbers of fine and hyperfine EPR lines expected for octahedral high-spin Mn(II) complexes are respectively ( I=5 / 2 for Mn ) · JUNE 2012
ABC26IN1162 · The number of lines exhibited by a high resolution EPR spectrum of the species, [Cu( ethylenediamine )2 ]2+ is [Nuclear spin (I) of Cu=3 /… · DEC 2012
ABC26IN0160 · The recoil energy of a Mossabauer nuclide of mass 139 amu is 2.5 MeV. The energy emitted by the nucleus in keV is: · DEC 2012
ABC26IN1163 · The recoil energy of a Mossabauer nuclide of mass 139 amu is 2.5 MeV. The energy emitted by the nucleus in keV is: · DEC 2012
ABC26IN0161 · Find out the number of lines in the 31P NMR signal for diagram · DEC 2012
ABC26IN1164 · Find out the number of lines in the 31 P NMR signal for diagram · DEC 2012
ABC26IN1165 · The number of EPR signals observed for octahedral Ni (II) complexes is · JUNE 2013
ABC26IN1166 · Among the following, those can act as Mössbauer muclei are arrayll (A) 129I & (B) 57Co \\ (C) 57Fe & (D) 121Sb array · JUNE 2013self-practice
ABC26IN1167 · For a tetragonally distorted Cr(III) complex, zero-field splitting results in the following number of Kramers doublets: · JUNE 2013
ABC26IN1169 · In Mössbauer experiment, a source emitting at 14.4 KeV (3.48 1018 Hz ) had to be moved towards absorber at 2.2 mms-1 for resonance. The… · JUNE 2013
ABC26IN1170 · The 19F NMR spectrum of ClF3 shows · JUNE 2014
ABC26IN1173 · The number of lines in the ESR spectrum of CD3 is (the spin of D is 1 ) · JUNE 2014self-practice
ABC26IN1174 · EPR spectrum of a free radical containing nuclei with nonzero nuclear spin is obtained if the following selection rules are observed- · DEC 2014
ABC26IN0162 · The 119Sn NMR chemical shift (approximately in ppm) corresponding to (5-Cp )2Sn (relative to Me4Sn) is · JUNE 2015
ABC26IN1175 · The 119Sn NMR chemical shift (approximately in ppm) corresponding to (5-Cp)2Sn (relative to Me4Sn) is · JUNE 2015
ABC26IN1177 · Mössbauer spectrum of a metal complex gives information about · JUNE 2015
ABC26IN0163 · Identify correct statements for the EPR spectrum of VO(acac)2 [with square pyramidal geometry at vanadium] at 77K [ I (51V )=7/2 ] (A) It… · JUNE 2016
ABC26IN1178 · Identify correct statements for the EPR spectrum of VO(acac)2 [with one pyramidal geometry at vanadium] at 77 K [I(51V)=7/2] arrayll (A) It… · JUNE 2016
ABC26IN1182 · The reaction between PI3, PSCl3 and zinc powder gives P3I5 as one of the products. The solution state 31P NMR spectrum of P3I5 shows a… · DEC 2016
ABC26IN1183 · For complex A, deuteration of NH protons does not alter the EPR spectrum. The number of hyper fine lines expected in the EPR [I ( 63 Cu )=3… · DEC 2016
ABC26IN1184 · Number of lines in the 19 F NMR spectrum of F2 C(Br)-C(Br) Cl2, at -120 C assuming it a mixture of static conformations given below, are 5 · DEC 2016
ABC26IN1185 · Mössbauer spectrum of complex [Fe(1,10-phenanthroline)2(NCS)2] shows two lines at 300 K, four lines at 186 K, and again two lines at 77 K… · JUNE 2017
ABC26IN1186 · (R3Ge)2 on photolysis gives a radical which shows ESR spectrum. The ESR signals carrying the signature of 73Ge\ (I=9/2) are in terms of · JUNE 2017
ABC26IN1187 · The 31P(1H) NMR spectrum of 2,2,6,6-N4P4Cl4(NMe2)4 is expected to show · JUNE 2017
ABC26IN1188 · Assuming 1JPH > JPB the expected 31P NMR spectrum of H3P.11BCl3 [for 11B, I=3/2] is · DEC 2017
ABC26IN0165 · The number of lines in EPR spectrum of CD3 (ID=1) is · DEC 2017
ABC26IN1189 · The number of lines in EPR spectrum of CD3 (ID=1) is · DEC 2017
ABC26IN1191 · The 31 P\1 H\ NMR spectrum of cis- [Pt (PEt3 )2 Cl2 ] ( 195 Pt . (33.8\% abundance) I=1 / 2; its other isotopes are (NMR inactive: 31 P… · DEC 2018
ABC26IN0167 · For an a an octahedral Cu2+ complex depicting axial EPR spectrum (g), the geometry of Cu and the orbital containing the unpaired electron… · DEC 2019self-practice
ABC26IN1193 · For an a an octahedral Cu2+ complex depicting axial EPR spectrum (g), the geometry of Cu and the orbital containing the unpaired electron… · DEC 2019
ABC26IN0168 · For the complex shown below in non-fluxional state, the expected 31P\1H\ NMR resonance(s) is/are [31P=I=1/2] · DEC 2019self-practice
ABC26IN1194 · For the complex shown below in non-fluxional state, the expected 31 P \ 1 H \ NMR resonance(s) is/are [ 31 P=I=1 / 2 ] · DEC 2019
IR Raman Symmetry
ABC26IN1171 · The low temperature (-98) 19F NMR spectrum of SF4, shows doublet of triplets with the point group symmetry. · JUNE 2014
Magnetic Measurements
ABC26IN1158 · If Mössbauer spectrum of Fe(CO)5 is recorded in the presence of a magnetic field, the original spectrum with two lines changes into the one… · JUNE 2012
ABC26IN1168 · In the presence of an external magnetic field (normal Zeeman effect), the transition 1 D2 1 P1 splits into · JUNE 2013
ABC26IN0166 · In the 31P\1H\ NMR spectrum of a diamagnetic complex mer-[M(PR3)3Cl3] (M=transition metal, I=0) expected number of resonance(s) is · DEC 2017
ABC26IN1190 · In the 31 P \ 1 H \ NMR spectrum of a diamagnetic complex mer- [M (PR3 )3 Cl3 ](M= transitionmetal, I=0 ) expected number of resonance(s) is · DEC 2018
Mossbauer
ABC26IN1155 · The correct value of isomer shift (in Mossbauer spectra) and its explanation for Fe(II)-TPP and Fe(III)-TPP respectively from the following… · JUNE 2011
ABC26IN1157 · In 57Fe Mossbauer experiment, source of 14.4 keV (equivalent to 3.48 1012 MHz) is moved towards absorber at a velocity of 2.2\ mm\,s-1. The… · DEC 2011
ABC26IN1161 · The Mossbauer spectra of two iron complexes are shown below. They may arise from (i) highspin iron(III), (ii) high-spin iron(II) and (iii)… · JUNE 2012self-practice