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Uses of Lanthanides

Which of the ...

Question

Which of the following is least basic?

A

L a (O H)_{3}

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B

L u (O H)_{3}

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C

C e (O H)_{3}

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D

N d (O H)_{3}

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Solution

The correct option is B $L u (O H)_{3}$
$L u^{3 +}$ is least stable and hence $L u (O H)_{3}$ is the weakest base.

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Similar questions

L a (O H)_{3}

is more basic than

L u (O H)_{3}

Q. Consider the following statements with respect to lanthanides:

1. The basic strength of hydroxides of lanthanides increases from

L a (O H)_{3}

L u (O H)_{3} .

2. The lanthanide ions

L u^{3 +}, Y b^{2 +} a n d C e^{4 +}

are diamagnetic.

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

Q. Observe the following statements.

1

. Lanthanides actively participate in chemical reactions.

2

. The basic nature of hydroxides of lanthanides increases from

L a (O H)_{3}

L u (O H)_{3}

.

3

. Lanthanides do not form coordinate compounds as readily as d-block metals.
The correct statements are:

Q. Consider the following statements
I.

L a (O H)_{3}

is least basic among hydroxides of lanthanides.
II.

Z r^{4 +}

H f^{4 +}

possess almost the same ionic radii.
III.

C e^{4 +}

can act as an oxidizing agent.
Which of the above is/are true?

Q. Consider the following statements.
I.

L a (O H)_{3}

is the least basic among hydroxides of lanthanides.
II.

Z r^{4 +}

H f^{4 +}

possess almost the same ionic radii.
III.

C e^{4 +}

can act as an oxidising agent.
Which of the above is/are true?

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