What does lanthanoid contraction result in?

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

Question

(C) Lanthanoid contraction refers to the steady decrease in the atomic and ionic radii of the lanthanoid elements as the atomic number increases from

Vedclass · Accepted Answer

Decrease in ionic radius

Vedclass · Answer

(C) Lanthanoid contraction refers to the steady decrease in the atomic and ionic radii of the lanthanoid elements as the atomic number increases from $La$ $(Z=57)$ to $Lu$ $(Z=71)$.This is due to the poor shielding effect of the $4f$ electrons,which causes the effective nuclear charge to increase,pulling the valence electrons closer to the nucleus.

Similar Questions

Which of the following acts as a strong reducing agent? (Atomic number: $Ce=58, Eu=63, Gd=64, Lu=71$)

Europium is

Which lanthanoid from the following may exhibit $+4$ oxidation state with $f^{0}$ configuration?

The number of unpaired electrons in the uranium $({ }_{92} U)$ atom is:

Write the electronic configurations of the elements with the atomic numbers $61$,$91$,$101$ and $109$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module