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Which of th following factor may be rega...

Which of th following factor may be regarded as the main cause of Lanthanide contraction?

A

Greter shielding of 5d electrons by 4f electrons

B

Poorer shielding of 5d electron by 4f electrons

C

Effective shielding of one of 4f electrons by another in the sub-shell

D

Poor shielding of one of 4f electron by another in the sub-shell

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The correct Answer is:
D
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RESONANCE ENGLISH-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 3
  1. Cerium (Z = 58) is an important member of the lanthanoids. Which of th...

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  2. The lanthanide contraction is responsible for the fact that

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  3. Which of th following factor may be regarded as the main cause of Lant...

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

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  5. Lanthanoid contraction is caused due to:

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  6. Identify the incorrect statement among the following.

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  7. The actinoids exhibit more number of oxidation states in generals than...

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  8. More number of oxidation states are exhibited by the actinides than th...

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

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

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  11. The correct order of E(M^(2+)//M)^@ value with negative sign for the f...

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  12. In context of the lanthanoids , which of the following statement is no...

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

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

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  15. Which of the following arrangements does not represent the correct ord...

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

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  17. Which series of reactions correctly chemical reactions related to iron...

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

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  19. Match the catalysts to the correct processes :

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  20. The colour of KMnO(4) is due to : [where M to metal, L to ligand]

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