(1) Lanthanides actively participate in chemical reactions.
(2)The basic nature of hydroxides of lanthanides 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
$\begin {array} {1 1} (1)\;2 \: and\: 3 & \quad (2)\;1,2\: and \: 3 \\ (3)\;1\: and \: 3 & \quad (4)\;1\: and \: 2 \end {array}$