STANDARDChemistry-Lanthanides and Actinides
STANDARD Chemistry Properties Multiple Correct Question
Type: Multiple Correct-conceptual-Medium
Consider the following statements I. La(OH)₃ is least basic among hydroxides of lanthanides. II. Zr⁴⁺ and Hf⁴⁺ possess almost the same ionic radii. III. Ce⁴⁺ can act as an oxidising agent. Which of the above is/are true?
A
I and III
B
II and III
C
II only
D
I and II
Correct Answer
Option B
Detailed Explanation
La(OH)₃ is most basic. Hence, (I) is wrong. (II) is correct due to lanthanoid contraction. (III) is correct because Ce⁴⁺ tends to change to stable Ce³⁺.
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