Because of lanthanoid contraction : – InterviewSolution

1.	Because of lanthanoid contraction :
Answer» separation of the elements is possible there is a very SMALL DIFFERENCE in the atomic size of thetransition metals of 5th and 6th PERIOD and PRESENT in the same group. there is a gradual decrease in the basic strengths of the hydroxides of lanthanoids All are correct. SOLUTION :all thestatements are correct.

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