Chemistry
GATE CY topic:lanthanides-actinides PYQs
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How to practice topic:lanthanides-actinides
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–9 of 9. Imported answers require independent review unless marked reviewed.
Question 54
Open questionCYMSQ2 marksNeeds review
The pair(s) of lanthanide ions whose ground state term symbols have same spin multiplicity (2S+1) and orbital angular momentum (L), but different spin-orbit coupling (J) is(are)
(Given: Atomic number: Nd = 60; Pm = 61; Ho = 67; Er = 68)
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The calculated magnetic moment of
is ______ BM. (rounded off to two decimal places)(Given: atomic number of Ce is 58)
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The compound(s) having [Xe]4f¹ configuration is(are)
(Given the atomic numbers Ce:58, Lu:71, Pr:59 and Nd:60)
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The calculated magnetic moment (in BM, rounded off to two decimal places) of a Ce
complex isLog in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 44
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The correct statement(s) about actinides is/are:
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In a uranium recovery process, an aqueous solution of uranyl ion is evaporated, dried in air at 400 °C and subsequently reduced with hydrogen at 700 °C to obtain a uranium compound (X). The oxidation state of uranium in X is ______
(Given: atomic number of U is 92)
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Open questionCYMCQ2 marksNeeds review
The experimental magnetic moment (3.4 BM) of a hydrated salt of Eu³⁺ at 27 °C is significantly different from the calculated value. The difference is due to (Given: atomic number of Eu is 63)
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Generally, the coordination number and the nature of the electronic absorption band (f → f transition) of lanthanide(III) ion in their complexes are, respectively,
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The lanthanide ion that exhibits color in aqueous solution is
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