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lanthanoid contraction is caused due to:...

lanthanoid contraction is caused due to:

A

the appreciable sshielding on outer electrons by 4f electrons from the nuclear charge

B

the appreaciable shiedling on outer electrons by 5f electrons from the nuclear charge

C

the same effective nuclear charge from Ce to Cu

D

the imperfect shielding on outer electrons by 4f electrons from the nuclear charge

Text Solution

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The correct Answer is:
D
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RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 3
  1. Which of the following factors may be regarded as the main cause of la...

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  2. The spin-only magnetic moment [in units of Bohr magneton, (mu(B) of Ni...

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  3. lanthanoid contraction is caused due to:

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  4. Identify the incorrect statement among the following.

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  5. The actinoids exhibit, more member of oxidation states in general than...

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  6. Larger number of oxidation state are exhibited by the actinoids than t...

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  7. In context with the transition elements, which of the following statem...

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  8. Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 ...

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  9. The correct order of E(M^(2+)//M)^(@) Values with negative sign for th...

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  10. In context of the lanthanoids, which of the following statements is no...

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  11. The outer electrons configuration of Lu (Atomic No.,71) is :

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  12. Iron exhibits +2 and +3 oxidation states. Which of the following state...

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  13. Which one of the following arrangements does not represent the correct...

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  14. Four successive members of the first row transition elements are liste...

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  15. Which series of reactions correctly represents chemical rections relat...

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  16. The equation which is balanced and represents the correct product(s) i...

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  17. Match the catalysts to the correct processes :

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  18. The colour of KMnO(4) is due to

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  19. Chloro compound of vanadium has only spin magnetic moment of 1.73 BM. ...

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  20. Which one of the following exhibits the largest number of oxidation st...

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