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Question

Consider the following statements with respect to lanthanides:

1. The basic strength of hydroxides of lanthanides increases from La(OH)3 to Lu(OH)3.

2. The lanthanide ions Lu3+,Yb2+andCe4+ are diamagnetic.

Which of the statement(s) given above is/are correct?

A
1 only
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B
2 only
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C
Both 1 and 2
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D
Neither 1 nor 2
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Solution

The correct option is B Both 1 and 2
(1) The base strength of hydroxides of lanthanides increases from La(OH)3 to Lu(OH)3.

(2) The lanthanide ions Lu3+,Yb2+,Ce4+ are deficient of unpaired electron hence, these are diamagnetic in nature.

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