1.

Consider the following statements in respecdt of lanthanides : 1. The basicstrength of hydroxides of lanthanoides increases from La(OH)_(3) to Lu(OH)_(3) 2. The lanthanide ions Lu^(3+), Yb^(2+) and Ce^(4+) are diamagnetic. Which of the statement(s) given above is //arecorrect ?

Answer»

1 only
2 only
both 1AND 2
Neither 1 and 2

Solution :BASIC strength decreases from `La(Oh)_(3)` to `Lu(OH)_(3)`. Hence, (l) is incorrect .The given ions contain no UNPAIRED electrons and therefore, are diamagnetic. Hence, (2) is correct.


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