alleryStart learning →Along the lanthanoids from La(OH)3 to Lu(OH)3, basicity of hydroxides
Aincreases steadily
Bdecreases steadily
Cstays constant
Dvanishes at once
Answer & Solution
Correct answer: B. decreases steadily
Ionic size falls from La3+ to Lu3+, so the hydroxides become less basic, with La(OH)3 the strongest base.
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