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

  • a)
    Poorer shielding of 5d-electrons by 4f-electrons.

  • b)
    Greater shielding of 5f – electrons by 4f-electrons.

  • c)
    Poor shielding of one of 4f – electrons by another in the sub shell. 

  • d)
    Effective shielding of one 4f-electrons by another in the sub shell.

Correct answer is option 'C'. Can you explain this answer?
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Which of the following factors may be regarded as the main cause of la...
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Option (a)

The filling of if orbits before 5d orbits result regular decrease in atomic radii called Lanthanoid contraction or can say the size of radii not much increase.
 In lanthanoid contraction shielding of one 4f electron on another 4f electron is less than shielding of one 5d electron on another 5d electron.


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Which of the following factors may be regarded as the main cause of la...
  • Lanthanide contraction is the gradual decrease in the atomic and ionic size of lanthanoids with an increase in atomic number.
  • The Lanthanide Contraction is caused by a poor shielding effect of the 4f electrons.
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Which of the following factors may be regarded as the main cause of la...
-electrons by 4f-electrons.
c)Increase in atomic number.
d)Decrease in atomic radius.
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Which of the following factors may be regarded as the main cause of lanthanide contraction:a)Poorer shielding of 5d-electrons by 4f-electrons.b)Greater shielding of 5f – electrons by 4f-electrons.c)Poor shielding of one of 4f – electrons by another in the sub shell.d)Effective shielding of one 4f-electrons by another in the sub shell.Correct answer is option 'C'. Can you explain this answer?
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Which of the following factors may be regarded as the main cause of lanthanide contraction:a)Poorer shielding of 5d-electrons by 4f-electrons.b)Greater shielding of 5f – electrons by 4f-electrons.c)Poor shielding of one of 4f – electrons by another in the sub shell.d)Effective shielding of one 4f-electrons by another in the sub shell.Correct answer is option 'C'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Which of the following factors may be regarded as the main cause of lanthanide contraction:a)Poorer shielding of 5d-electrons by 4f-electrons.b)Greater shielding of 5f – electrons by 4f-electrons.c)Poor shielding of one of 4f – electrons by another in the sub shell.d)Effective shielding of one 4f-electrons by another in the sub shell.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following factors may be regarded as the main cause of lanthanide contraction:a)Poorer shielding of 5d-electrons by 4f-electrons.b)Greater shielding of 5f – electrons by 4f-electrons.c)Poor shielding of one of 4f – electrons by another in the sub shell.d)Effective shielding of one 4f-electrons by another in the sub shell.Correct answer is option 'C'. Can you explain this answer?.
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