Question:
Lanthanoid contraction can be observed in:
Lanthanoid contraction can be observed in:
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Lanthanoid contraction is most apparent in Gd due to poor shielding of the nuclear charge by the f-electrons.
Updated On: Nov 25, 2025
- At
- Gd
- Ac
- Lw
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The Correct Option is B
Solution and Explanation
Step 1: Lanthanoid contraction refers to the progressive decrease in the size of the lanthanide ions as we move from left to right across the lanthanide series.
Step 2: This contraction is mainly due to the ineffective shielding of the nuclear charge by the f-electrons.
Step 3: Gadolinium (Gd) is the element in the lanthanide series where lanthanoid contraction is most notable due to its electron configuration.
Step 2: This contraction is mainly due to the ineffective shielding of the nuclear charge by the f-electrons.
Step 3: Gadolinium (Gd) is the element in the lanthanide series where lanthanoid contraction is most notable due to its electron configuration.
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