Out of Lu(OH)3 and La(OH)3 which is more basic and why?

Out of Lu(OH)₃ and La(OH)₃ which is more basic and why?

Answer in Brief

As we move from Ce³⁺ to Lu³⁺, the basic character of Lu³⁺ ions decreases.
Due to the decrease in the size of Lu³⁺ ions, the ionic character of the Lu – OH bond decreases, covalent character increases which results in the decrease in the basicity.
Hence, La(OH)₃ is more basic than Lu(OH)₃.

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Chapter 4: Transition and Inner Transition Elements - Evaluation [Page 129]

Chapter 4 Transition and Inner Transition Elements
Evaluation | Q 19. | Page 129

Which of the following oxidation states is most common among the lanthanoids?

Assertion: Ce⁴⁺ is used as an oxidizing agent in volumetric analysis.

Reason: Ce⁴⁺ has the tendency of attaining +3 oxidation state.

The most common oxidation state of actinoids is ____________.

Justify the position of lanthanides and actinides in the periodic table.

What is lanthanoid contraction and what are the effects of lanthanoid contraction?

Actinoid contraction is greater from element to element than the lanthanoid contraction, why?

Why do zirconium and Hafnium exhibit similar properties?

Which of the following is not an actinoid?

Electronic configurations of four elements A, B, C and D are given below:

(A) 1s²2s²2p⁶

(B) 1s²2s²2p⁴

(D) 1s²2s²2p⁵

Which of the following is the correct order of increasing tendency to gain electron:

Electronic configuration, [Ne] 3s² 3p⁴ is for ______.