1.

Consider the following statements I La(OH)_(3) isleastbasic among hydroxides of lanthanidesII.Zx^(4+) and Hf^(4+ possess almost the same ionic radii III.Ce^(4+) can actas an oxidizing agent.

Answer»

I and II
II and III
II only
I and II

SOLUTION :`La(OH)_(3)` is most BASIC. Hence, (I) is WRONG. (II) is correct DUE to lanthanoid contraction. (III) is correct because`Ce^(4+)` tends to change to stable `Cr^(3+)`


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