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Uses of Slaked Lime

LaOH3 is more...

Question

$L a (O H)_{3}$ is more basic than $L u (O H)_{3}$ .

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Solution

Due to lanthanide contraction as the size of lanthanide ions decreses from La3+ to Lu3+ , the covalent character of the hydroxides increases and hence the basic strength decreases.
La(OH)3 is most basic and Lu(OH)3 is least basic.

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Similar questions

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. The compound

(S i H_{3})_{3} N

is expected to be:

Q. Consider thiol anion (

R S^{-}

) and alkoxy anion (

R O^{-}

). Which of the following statements is correct?

Q. NaOH is more basic than LIOH.

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Uses of Slaked Lime

Standard XII Chemistry

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