Answer to Question #177777 in Inorganic Chemistry for sanjana

Question

What is the reason of the lanthanoid contraction

Answer 1

The Lanthanide Contraction is caused by a poor shielding effect of the 4f electrons. Gd because as atomic number increases, the atomic radius decreases. Yb because it has a larger atomic number. Because the elements in Row 3 have 4f electrons.