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NEETChemistryd and f Block Elements

Compare the atomic and ionic sizes of actinoids with that of the lanthanoids

Options

  1. AThe atomic and ionic sizes of lanthanoids and actinoids increase with increase in the atomic number due to lan
  2. BThe atomic and ionic sizes of lanthanoids and actinoids decrease with increase in the atomic number due to lan
  3. CThe atomic and ionic sizes of lanthanoids and actinoids remain constant with increase in the atomic number due
  4. DCannot be decided without further information

Correct answer

B. The atomic and ionic sizes of lanthanoids and actinoids decrease with increase in the atomic number due to lan

Step-by-step solution

Correct Option is : (B) The atomic and ionic sizes of lanthanoids and actinoids decrease with increase in the atomic number due to lanthanoid and actinoid contraction.

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