Statement I:Atomic size of Zr is almost equal to atomic size of HfStatement II: Due to poor shielding of 5f orbitals, the atomic size of Zr and Hf is almost same

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Statements I and II are correct

Statement I is correct and statement II is incorrect

Statement I is incorrect and statement II is correct

Statements I and II are incorrect

answer is B.

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Detailed Solution

Due lanthanoid contraction(poor shielding of 4f orbitals) atomic radii of Zr and Hf are nearly equal;

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