Arrange the following elements in increasing | vedclass

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

Question

(B) Atomic radius generally increases down a group and decreases across a period from left to right. $Na$ $(Z=11)$ and $Mg$ $(Z=12)$ belong to the $3^

Vedclass · Accepted Answer

$Mg < Na < K < Rb$

Vedclass · Answer

(B) Atomic radius generally increases down a group and decreases across a period from left to right. $Na$ $(Z=11)$ and $Mg$ $(Z=12)$ belong to the $3^{rd}$ period,while $K$ $(Z=19)$ and $Rb$ $(Z=37)$ belong to the $4^{th}$ and $5^{th}$ periods respectively. Across the $3^{rd}$ period,atomic radius decreases from $Na$ to $Mg$,so $Mg Down Group $1$,atomic radius increases as $Na Combining these trends,the order is $Mg < Na < K < Rb$.

Arrange the following elements in increasing order of their atomic radius: $Na$,$K$,$Mg$,$Rb$.

Similar Questions

In the main group elements $(i)$ as we proceed down the same group in the periodic table and $(ii)$ as we proceed from left to right in the same period,the atomic radius

How does atomic radius vary in a period and in a group? How do you explain the variation?

The reason for a cation to be smaller than its parent atom is

Which ion has the greatest radius among the following?

$A$ trend common to both groups $I$ and $VII$ elements in the periodic table as atomic number increases is

Vedclass Test Series

Exam Paper Generator

Online Exam Module