Identify the incorrect statement among the following

Options

A. There is decrease in the radii of atoms or ion as one proceeds from La to Lu
B. Lanthanoid contraction is the accumulation of successive shrinkages
C. As a result of lanthanide contraction, the properties of the 4th series of the contraction element have no similarities with the 5d series of elements
D. Shielding power of 4f element of electron is quite weak

Answer

C

Explanation

As a result of lanthanide contraction, the properties of the 4th series of the contraction element have similarities with the 5d series of elements that’s why the statement (c) is incorrect.