Home Chemistry D and F - Block Elements NTA Abhiyas Question Which of the following are not more basic th…
Chemistry D and F - Block Elements NTA Abhiyas Question Single Correct MCQ
Published on: August 12, 2026

Which of the following are not more basic than A1(OH) 3 ?

A
Ca(OH) 2 , Ce(OH) 3
B
Yb(OH) 3 , Lu(OH) 3
C
B(OH) 3 , Be(OH) 2
D
Ce(OH) 3 , Lu(OH) 3

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Text Solution

Verified by Experts
The correct answer is:
C

B(OH) 3 , Be(OH) 2

The basic strength of the hydroxides decreases as we move from cerium to lutetium Also the lanthanoid hydroxides are more basic than A1(OH) 3 but less basic than Ca(OH) 2 .

B(OH) 3 is more covalent than Al(OH) 3 .Be(OH) 2 is as covalent as A1(OH) 3 .

B(OH) 3 is acidic while Be(OH) 2 and AI(OH) 3 are amphoteric while all others are more basic than AI( OH) 3 .

Hence choice is correct while , and are incorrect.

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