TS EAMCET · Chemistry · d and f Block Elements
Identify all the correct statements for Lanthanide contraction. (A) The covalent properties of the Lanthanide metal hydroxides increases from \(\mathrm{La}\) to \(\mathrm{Lu}\). (B) The chemical reactivity decreases from \(\mathrm{La}\) to \(\mathrm{Lu}\). (C) \(\mathrm{La}(\mathrm{OH})_3\) is more basic than \(\mathrm{Lu}(\mathrm{OH})_3\) (D) Zr and Hf have about the same radius. (E) Separation of Lanthanides from one another is easy
- A A, B, C, E only
- B A, B, C, D only
- C A, B, C only
- D B, C, D only
Answer & Solution
Correct Answer
(B) A, B, C, D only
Step-by-step Solution
Detailed explanation
The change in ionic radii is Lanthanide series is very small, their chemical properties are small. Thus, the separation of Lanthanide is difficult due to consequence of Lanthanide contraction. The ionic radii of same positive charge of \(\mathrm{La}\) to \(\mathrm{Lu}\)…
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