Account for the following :
Write any two consequences of Lanthanoid Contraction.
Name the element of 3d series which exhibits the largest number of oxidation states. Give reason.
What is Lanthanoid contraction ? Write its two consequences.
Assertion (A): Separation of Zr and Hf is difficult. Reason (R): Zr and Hf have similar radii due to lanthanoid contraction.
Assertion (A) : Zr and Hf are of almost similar atomic radii. Reason (R) : This is due to Lanthanoid contraction.
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