In period 4 of the periodic table,the element | vedclass

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Question

(C) In a period,moving from left to right,the atomic radius decreases due to an increase in effective nuclear charge. In period $4$,the elements range

Vedclass · Accepted Answer

$K$ & $Br$

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(C) In a period,moving from left to right,the atomic radius decreases due to an increase in effective nuclear charge. In period $4$,the elements range from $K$ (Group $1$) to $Kr$ (Group $18$). Excluding noble gases (which have larger van der Waals radii),the element with the largest atomic radius is $K$ (Potassium) and the element with the smallest atomic radius is $Br$ (Bromine). Therefore,the correct pair is $K$ & $Br$.

In period $4$ of the periodic table,the elements with the highest and lowest atomic radii are respectively:

Similar Questions

The ionic radii of $Na^{+}$,$F^{-}$,$O^{2-}$,and $N^{3-}$ follow the order:

Arrange the following elements in the increasing order of their atomic radii:
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Which of the following represents the correct order of ionic radii?

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