ABC26IN0171 · Lanthanides and Actinides

Subject: Inorganic Chemistry · Chapter: Lanthanides and Actinides · Topic: Lanthanides & Actinides – General · Exam: CSIR-NET 2012 · Marks: 2 · Difficulty: Medium

The least basic among the following is:

(a)$\mathrm{Al}(\mathrm{OH})_{3}$

(b)$\mathrm{La}(\mathrm{OH})_{3}$

(c)$\mathrm{Ce}(\mathrm{OH})_{3}$

(d)$\mathrm{Lu}(\mathrm{OH})_{3}$

Answer

Answer (as printed): A

Explanation

$\mathrm{Al(OH)_3}$ is amphoteric, whereas hydroxides of lanthanoids are all basic.

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