Lanthanides and Actinides
42 questions in this chapter.
Study loop for Lanthanides and Actinides
1. Practise the PYQsPrevious-year questions, with answers
Actinide Chemistry
ABC26IN0175 · The pair in which both actinides show +3 oxidation state only is · 2020
Lanthanide And Actinide – General
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… · 2005-2021 self-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… · 2005-2021 self-practice
Lanthanide Contraction
ABC26IN0173 · Trivalent lanthanide ion having isotropic magnetic susceptibility is 1. Eu+3 2. Gd+3 3. Yb+3 4. Lu+3 · 2018 self-practice
ABC26IN0174 · Pair of lanthanide ions which show significant deviation between the experimental and calculated magnetic moments, considering contribution… · 2019 self-practice
Lanthanides & Actinides – General
ABC26IN1196 · Among the following statements, identify the correct ones for complexes of lanthanide (III) ion. (A) Metal-ligand bond is significantly… · 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
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 (A) Nd(III) (B) Gd(III) (C) Dy(III) The magnetic moment closest to the spin only value is(are) for · 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 dpmH… · DEC 2014
ABC26IN1211 · Consider the following statements with respect to uranium (A) UO2+ disproportionates more easily than UO22+ (B) U3O8 is its most stable… · 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? (A) the observed magnetic moment of Eu at room temperature is higher than… · 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
ABC26IN1220 · Consider the following statement(s) for actinides (An): A. Oxidation states greater than +3 are more frequent in An compared to lathanides… · DEC 2017
ABC26IN1221 · Trivalent lanthanide ion having isotropic magnetic susceptibility is · JUNE 2018
ABC26IN1223 · Consider following statements for Eu3+ (A) The positions of sharp bands in UV-vis spectra of its complexes depend heavily on the ligand… · 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
ABC26IN1228 · The effective magnetic moment (in BM) for a lanthanide f10 ion is approximately · JUNE 2021
Magnetic Properties 4f
ABC26IN0172 · Consider the following statements for (NH4)2[Ce(NO3)6] (Z) (A) Coordination number of Ce is 12 (B) Z is paramagnetic (C) Z is an oxidising… · 2015