Question:
What is meant by lanthanoid contraction?
What is meant by lanthanoid contraction?
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Lanthanoid contraction affects size and properties of transition elements.
Updated On: Mar 2, 2026
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Solution and Explanation
Lanthanoid contraction refers to the gradual decrease in atomic and ionic radii of lanthanoids with increasing atomic number.
Cause:
Cause:
- Poor shielding by 4f electrons
- Increased effective nuclear charge
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