Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET202316 May 2023Morning ShiftChemistryd and f Block ElementsActual

Correct order of basic strength of metallic hydroxides

Options

  1. ACe ( OH )₃ < Lu ( OH )₃ < Eu ( OH )₃
  2. BCe ( OH )₃ < Eu ( OH )₃ < Lu ( OH )₃
  3. CLu ( OH )₃ < Eu ( OH )₃ < Ce ( OH )₃
  4. DLu ( OH )₃ < Ce ( OH )₃ < Eu ( OH )₃

Correct answer

C. Lu ( OH )₃ < Eu ( OH )₃ < Ce ( OH )₃

Step-by-step solution

The atomic numbers of the given lanthanides are:- Ce =58, Eu =63, Lu =71 Since the metallic character decreases from left to right in a period, the order of metallic character for the given metal will be Lu < Eu < Ce . Thus, the basic strength of their hydroxides will be:- Lu ( OH )₃ < Eu ( OH )₃ < Ce ( OH )₃ .

Practice d and f Block Elements on Quantrex Academy →

More from d and f Block Elements

Pick out the correct option Assertion(A): Mercury is not considered as a transition element Reason (R): Mercury is a liquid 2026Which of the following does not correctly represent the order of the property indicated against it? 2026The element with the highest third ionisation enthalpy is: 2026The product and its colour when MnO₂ is fused with KOH in presence of O₂ : 2026The ion that has a spin only magnetic moment of 5.9 BM is: 2026Which one of the following species will impart colour to an aqueous solution? 2026The basic character of transition metal monoxides follows the order: 2026K ₂ Cr ₂ O ₇ on heating with aqueous NaOH gives ------------------------- 2026 Full d and f Block Elements list All AP EAMCET PYQs