The dand fblock elements - Result Question 81

####81. Which of the following statement is not correct?

[2001]

(a) La(OH)3 is less basic than Li(OH)3

(b) La is actually an element of transition series rather lanthanides

(c) Atomic radius of Zr and Hf are same because of lanthanide contraction

(d) In lanthanide series ionic radius of Ln+3 ions decreases

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Solution:

  1. (a) La(OH)3 is more basic than Li(OH)3. In lanthanides, the basic character of hydroxides decreases as the ionic radius decreases.


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