Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

Which of the following is NOT a consequence of Lanthanide contraction?

(1) The decrease in ionic radii of the lanthanides from 103 pm (La$^{3+}$) to 86 pm (Lu$^{3+}$) in the lanthanide series.

(2) The Basic nature increases from Ce(OH)$_3$ to Lu(OH)$_3$

(3) The covalent nature in M(OH)$_3$ will decrease from Ce(OH)$_3$ to Lu(OH)$_3$

(4) The E$^{\circ}$ value increases slightly due to Lanthanide contraction

$\begin {array} {1 1}Both (2) and (3) \\ Only (2) \\ Both (1) and (2) \\ (1), (2) and (4) \end {array}$

Can you answer this question?

1 Answer

0 votes
Answer: Both (2) and (3)
Basic nature $\propto \large\frac{1}{\text{Atomic Number}}$ and Covalent Nature $\propto \large\frac{1}{\text{size of cation}}$
$\Rightarrow$ The Basic nature decreases and the covalent nature increases.
answered Aug 6, 2014 by balaji.thirumalai
edited Aug 6, 2014 by balaji.thirumalai

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App