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The d- and f-Block Elements
Lanthanoids – Lanthanoid Contraction
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Concepts tested
- similar radii of Zr and Hf
All Questions
2021 1 question
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Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of:Due to lanthanoid contraction (poor shielding by 4f electrons), Hf (5d series) has almost the same atomic and ionic radii as Zr (4d series).
