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Chemistry · 2024 · 1 mark
CBSE 2024 · Region 5 · Set 1 · Q13
Assertion (A): Zr and Hf are of almost similar atomic radii. Reason (R): This is due to Lanthanoid contraction.
Assertion (A) : Zr and Hf are of almost similar atomic radii.
Reason (R) : This is due to Lanthanoid contraction.
Official answer
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
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CBSE Class 12 Chemistry past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.