The increasing order of atomic radii of the f | vedclass

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

Question

(B) The atomic radii of Group $13$ elements generally increase down the group due to the addition of new shells.
However, there is an anomaly between

Vedclass · Accepted Answer

$Ga < Al < In < Tl$

Vedclass · Answer

(B) The atomic radii of Group $13$ elements generally increase down the group due to the addition of new shells.
However, there is an anomaly between $Al$ and $Ga$.
$Al$ has an atomic radius of approximately $143 	ext{ pm}$, while $Ga$ has an atomic radius of approximately $135 	ext{ pm}$.
This occurs because $Ga$ follows the $3d$ transition series, where the $d$-electrons provide poor shielding for the outer electrons from the nuclear charge.
Consequently, the effective nuclear charge increases, causing the atomic radius of $Ga$ to be smaller than that of $Al$.
The correct increasing order is $Ga < Al < In < Tl$.

The increasing order of atomic radii of the following Group $13$ elements is:

Similar Questions

Which of the following has the largest ionic radius?

Which cation has the smallest radius?

The bond length in $Cl_2$ is $198 \ pm$. Calculate the atomic radius of chlorine. (in $pm$)

The set representing the correct order of ionic radius is:

The radius of which ion is closest to that of $Li^{+}$ ion?

Vedclass Test Series

Exam Paper Generator

Online Exam Module