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Which out of the two, La(OH)(3) and Lu(O...

Which out of the two, `La(OH)_(3)` and `Lu(OH)_(3)` is more basic and why ?

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To determine which of the two compounds, La(OH)₃ (lanthanum hydroxide) or Lu(OH)₃ (lutetium hydroxide), is more basic, we can analyze their properties based on the concepts of basicity and covalent character. ### Step-by-Step Solution: 1. **Understanding Basicity**: Basicity refers to the ability of a compound to accept protons (H⁺ ions) or donate electron pairs. In the context of metal hydroxides, basicity can be influenced by the nature of the metal cation. 2. **Position in the Lanthanide Series**: Lanthanum (La) is located at the beginning of the lanthanide series, while lutetium (Lu) is at the end. As we move from La to Lu, the ionic character of the metal hydroxides tends to decrease. ...
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(a). Of the lanthanides, cerium (Z=58) forms a tetrapositive ion, Ce^(4+) in aqueous solution. Why? (b), The +3 oxidation states of lanthanum (Z=57) , gadolinium (Z=64) and lutetium (Z=71) are especially stable. Why? (c). Why Zr and or Nb anbd Ta exhibit similar properties ? (d). Which oiut of the two La(OH)_3 and Lu(OH)_3 , is more basic and why?

Why Ce(OH)_(3) is more basic than Lu(OH)_(3) ?

Lanthanoids and actinoids are f-block elements in which the last electron enters the anti-penultimate energy level. The most common oxidation state of lanthanoids is +3, though +2 and +4 oxidation states are exhibited by some of the elements. In lanthanoid series, there is a progressive decrease in atomic and ionic radii, known as lanthanoid contraction. Unlike lanthanoids, actinoids show a large number of oxidation states. Which out of La(OH)_3 and Lu(OH)_3 is more basic?

La^(3+) and Lu^(3+) are

Among the lanthanides, La^(3+) and Lu^(3+) ions are

Explain the following : (a) Out of Sc^(3+), Co^(2+) " and "Cr^(3+) "ions, only "Sc^(3+) is colourless in aqueous solutions. (Atomic no.: Co =27, Sc = 21 and Cr =24) (b) The E^(@)Cu^(2+)//Cu for copper metal is positive (+0.34), unlike the remaining members of the first transition series. (c) La(OH)_(3) " is more basic than Lu "(OH)_(3).

PRADEEP-D- AND F-BLOCK ELEMENTS-CONCEPTUAL QUESTIONS
  1. (a) Following are the transition metal ions of 3d series: Ti^(4+),V^...

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  2. Write the formula of different oxides of manganese. What is the oxidat...

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  3. What is the effect of increasing pH on the colour of K(2)Cr(2)O(7) sol...

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  4. In the titratin of Fe^(2+) ions with KMnO(4) in acidic medium, why dil...

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  5. Give the relationship between the equivalent weight and molecular weig...

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  6. Why is it not advisable to dissolve KMnO(4) in conc. H(2)SO(4) ?

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  7. Why in permanganate ion, there is a covalency between Mn and oxygen ?

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  8. When chromite ore FeCr(2)O(4) is fuse with NaOH in presence of air, a ...

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  9. Briefly explain why electronic configuration of lanthanoids are not kn...

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  10. The +3 oxidation states of langthanum ( Z= 57), gadolinium (Z= 64) and...

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  11. The outer electronic configuration of two members of the lanthanoid se...

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  12. Why Zr and Hf or Nb and Ta exhibit similar properties? Or Zirconium ...

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  13. Why Sm^(2+), Eu^(2+) and Yb^(2+) ions in solutions are good reducing a...

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  14. One among the langthanides ,Ce(III), can be easily oxidized to Ce(IV)(...

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  15. Which out of the two, La(OH)(3) and Lu(OH)(3) is more basic and why ?

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  16. The electronic configuration of actinide elements are not known with c...

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  17. How would you account for the fact that actinoids exhibit a larger num...

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  18. The actinide contraction differs from lanthanide contraction ? Explai...

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  19. Account for the following : (i) Oxidizing power in the series : VO^(...

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  20. Account for the following : (a) Europlum (II) is more stable than ce...

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