Observe the following statements
1) Lanthanides actively participate in chemical reactions
2) The basic nature of hydroxides of lantha-nides increases from La(OH)₃ to Lu(OH)₃
3) Lanthanides do not form coordinate compounds as readily as d-block metals
The correct statements are

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2 & 3

1, 2 & 3

1 & 3

1 & 2

answer is C.

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Detailed Solution

Across the lanthanide series the size of the cations decreases thereby decreasing ionic character and increasing covalent character of hydroxides of lanthanides. Thus, the basicity of hydroxides decreases.

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