Question:medium
Which of the following pair of lanthanide elements have the same atomic radii?
Which of the following pair of lanthanide elements have the same atomic radii?
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Lanthanoid contraction is due to poor shielding by $4f$ electrons.
Updated On: Apr 27, 2026
- Lanthanum and Lutetium
- Samarium and Gadolinium
- Praseodymium and Holmium
- Terbium and Cerium
- Promethium and Dysprosium
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The Correct Option is B
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