ABC26IN0175 · The pair in which both actinides show +3 oxidation state only is · 2020
Lanthanide And Actinide – General
ABC26IN0423 · The lanthanide complex (acac = acetylacetonate; phen = 1, 10-phennathroline) that do not have square antiprismatic structure is · 2005-2021
ABC26IN0424 · The reaction between Pr6 O11 and dilute HCl leads to the formation of · 2005-2021
ABC26IN0425 · The separation of trivalent lanthanide ions, Lu3+, Yb3+, Dy3+, Eu3+ can be effectively done by a cation exchange resion using ammonia o -… · 2005-2021
ABC26IN0426 · The correct electronic configuration and spin only magnetic moment of Gd3+ (atomic number 64) are · 2005-2021
ABC26IN0427 · The calculated and observed magnetic moments differ considerably for an aqua complex of a Lanthanide (III) ion as a result of low lying… · 2005-2021
ABC26IN0428 · The lanthanide ion the exhibits color in aqueous solution is · 2005-2021
ABC26IN0429 · Generally, the coordination number and the nature of the electronic absorption band ( f f transition )of lanthanide (III) ion in their… · 2005-2021
ABC26IN0430 · In a uranium recovery process, an aqueous solution of uranyl ion is evaporated, dried in air at 400 C and subsequently reduced with… · 2005-2021self-practice
ABC26IN0431 · The experimental magnetic moment (3.4 BM ) of a hydrated salt of Eu3+ at 27°C is significantly different from the calculated value. The… · 2005-2021self-practice
ABC26IN0432 · The correct statement(s) about actinides is/are: · 2005-2021self-practice
Lanthanide Contraction
ABC26IN0173 · Trivalent lanthanide ion having isotropic magnetic susceptibility is · 2018self-practice
ABC26IN0174 · Pair of lanthanide ions which show significant deviation between the experimental and calculated magnetic moments, considering contribution… · 2019self-practice
Lanthanides & Actinides – General
ABC26IN1196 · Among the following statements, identify the correct ones for complexes of lanthanide (III) ion. arrayl (A) Metal-ligand bond is… · JUNE 2011
ABC26IN1197 · Statement I: The sizes of Zr and Hf are similar Statement II: Size of Hf is affected by lanthanide contraction. · JUNE 2011
ABC26IN0169 · The electronic configuration for gadalonium (Gd) is [Xe]4f7\,5d16s2, where as that of Gd2+ is: · JUNE 2011
ABC26IN1198 · The electronic configuration for gadalonium (Gd) is [Xe]4f7 5d1 6s2, where as that of Gd2+ is: · JUNE 2011
ABC26IN0170 · Uranium fluorides co-precipitate with · JUNE 2011
ABC26IN1199 · The actual magnetic moment shows a large deviation from the spin-only formula in the case of · DEC 2011
ABC26IN0171 · The least basic among the following is: · 2012
ABC26IN1200 · The least basic among the following is: · JUNE 2012
ABC26IN1201 · The pair of lanthanides with the highest third-ionization energy is: · JUNE 2012
ABC26IN1202 · The lanthanide(III) ion having the highest partition coefficient between tri-n-butylphosphate and concentrated HNO3 is: · JUNE 2012
ABC26IN1203 · Which one of the following shows the highest solubility in hot concentrated aqueous NaOH ? · DEC 2012
ABC26IN1204 · Consider the ions Eu(III), Gd(III), Sm(II) and Lu(III). The observed and calculated magnetic moment values are closest for the pair · DEC 2012
ABC26IN1205 · Consider following lanthanide (III) ions arrayl (A) Nd(III) \\ (B) Gd(III) \\ (C) Dy(III) array The magnetic moment closest to the spin… · JUNE 2013
ABC26IN1206 · The ground state term symbol for Nb (atomic number 41) is 6D. The electronic configuration corresponding to this term symbol is · JUNE 2013
ABC26IN1207 · The ground state forms of Sm and Eu respectively, are · DEC 2013
ABC26IN1208 · A comparison of the valence electron configuration of the elements, Sm and Eu suggests that · JUNE 2014
ABC26IN1209 · The correct order of the retention of cations on a sulfonated cation exchange resin column is · DEC 2014
ABC26IN1210 · Hindered beta -diketonates like dpmH(dpmH= dipivaloylmethane ) are used for the separation of lanthanides because complexes formed with… · DEC 2014
ABC26IN1211 · Consider the following statements with respect to uranium arrayl (A) UO2+ disproportionates more easily than UO22+ \\ (B) U3O8 is its most… · JUNE 2015
ABC26IN1212 · Consider the following statements for (NH4 )2 [Ce (NO3 )6 ](Z) · JUNE 2015
ABC26IN1213 · The metallic radii are abnormally high for which of the following pairs? · DEC 2015
ABC26IN1214 · Which of the following statements are TRUE for the lanthanides? arrayl (A) the observed magnetic moment of Eu at room temperature is higher… · DEC 2015
ABC26IN1215 · For monoionic complex [UO2(NO3)3 ]- the correct coordination number and geometry respectively, are · JUNE 2016
ABC26IN1216 · The g values for Ce3+ (4f1) and Pr3+ (4f2) are, respectively · JUNE 2016
ABC26IN1217 · Which one of the following pairs has two magic numbers for closed nuclear shells? · JUNE 2017
ABC26IN1218 · The calculated and observed magnetic moments (in B.M.) of aqua complex of a lanthanide ion are 0 and ~3.5, respectively. The lanthanide ion… · JUNE 2017
ABC26IN1219 · Match lanthanides in Column I with their properties in Column II Correct match is · DEC 2017
ABC26IN1220 · Consider the following statement(s) for actinides (An): arrayl A. Oxidation states greater than +3 are more frequent in An compared to… · DEC 2017
ABC26IN1221 · Trivalent lanthanide ion having isotropic magnetic susceptibility is · JUNE 2018
ABC26IN1222 · Match fluorescence colours given in column A with lanthanide ions given in Column B Correct match is · JUNE 2018
ABC26IN1223 · Consider following statements for Eu3+ arrayl (A) The positions of sharp bands in UV-vis spectra of its complexes depend heavily on the… · DEC 2018
ABC26IN1224 · The coordination number of Gd in GdCl3 .6 H2 O is · JUNE 2019
ABC26IN1225 · Pair of lanthanide ions which show significant deviation between the experimental and calculated magnetic moments, considering contribution… · DEC 2019
ABC26IN1226 · The pair in which both actinides show +3 oxidation state only is · DEC 2019
ABC26IN0176 · The correct match for column A with column B is: · 2020self-practice
ABC26IN1227 · The correct match for column A with column B is : · DEC 2019
ABC26IN1228 · The effective magnetic moment (in BM) for a lanthanide f10 ion is approximately · JUNE 2021