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Q.

Which of the following statements is not correct?

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a

LaOH3 is less basic than LuOH3

b

In lanthanide series, ionic radius of Ln3+ ions decreases

c

La is actually an element of transition series rather than lanthanide series

d

Atomic radii of Zr and Hf are same because of lanthanide contraction

answer is A.

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Detailed Solution

LaOH3 is more basic than LuOH3
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