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Which of the following factors may be re...

Which of the following factors may be regarded as the main cause the lanthanide contraction ?

A

Poor shielding of one of 4f electron by another in the subshell

B

Effective shielding of one of 4f electrons by another in the subshell

C

Poorer shielding of 5d electrons by 4f electrons

D

greater shielding of 5d electrons by 4f electrons

Text Solution

Verified by Experts

The correct Answer is:
C
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MOTION-PERIODIC TABLE -Exercise - 4 | Level-I
  1. In which of the following arrangements the order is NOT according to t...

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  2. Which of the following oxides is amphoteric in character ?

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  3. Pick out the isoelectronic structures from the following (i) CH(3)^(...

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  4. The lanthanide contraction is responsible for the fact that

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  5. Which of the following factors may be regarded as the main cause the l...

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  6. The increasing order of the first ionization enthalpies of the element...

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  7. Which one of the following sets of ions represents a collection of iso...

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  8. Lanthanide contraction is caused due to -

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  9. Which one of the following constitutes a group of the isoelectronic sp...

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  10. In which of the following arrangements, the sequence is not strictly a...

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  11. The correct sequence which shows decreasing order of the ionic radii o...

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  12. Which one of the following order represents the correct sequence of th...

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  13. Outer electronic configuration of Gd (atomic no: 64) is-

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  14. The increasing order of the ionic radii of the given isoelectronic spe...

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  15. The ionic radii of N^(3-), O^(2-) and F^(-) are respectively given by:

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  16. Which of the following represent the correct order of increasing first...

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  17. The first ionisation potential of Na is 5.1eV. The value of eectrons g...

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  18. The ionic radii of N^(3-), O^(2-) and F^(-) are respectively given by:

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  19. Which one of the following alkaline earth metal sulphates has its hydr...

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  20. Which among the following is the most reactive gt

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