Lanthanoid contraction is responsible for whi | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Lanthanoid contraction is the steady decrease in the atomic and ionic radii of lanthanoids with an increase in atomic number.Due to lanthanoid con

Vedclass · Accepted Answer

$Zr$ and $Hf$ having similar radii.

Vedclass · Answer

(C) Lanthanoid contraction is the steady decrease in the atomic and ionic radii of lanthanoids with an increase in atomic number.Due to lanthanoid contraction,the elements of the $4d$ and $5d$ transition series,specifically $Zr$ $(Z=40)$ and $Hf$ $(Z=72)$,exhibit almost identical atomic and ionic radii.This similarity in size makes the separation of $Zr$ and $Hf$ very difficult.

Lanthanoid contraction is responsible for which of the following?

Similar Questions

The melting point of $Zn$ is lower as compared to those of the other elements of the $3d$ series because:

Which of the following is a coloured compound?

The atomic number of an element is $26$. The element shows:

An ion with a definite magnetic moment (spin only) is:

The electronic configurations of four elements are:
$(i) \; [Xe] \; 6s^1$
$(ii) \; [Xe] \; 4f^{14}5d^16s^2$
$(iii) \; [Ne] \; 3s^23p^5$
$(iv) \; [Ar] \; 3d^74s^2$
Which one of the following statements about these elements is not true?

Vedclass Test Series

Exam Paper Generator

Online Exam Module