Question

The table shows the atomic radii of four elements.

Answer 1

$\sf Potassium \ : \ 2.2 * 10^{-7}$

$\sf Argon \ : \ 7.1 * 10^{-8}$

$\sf Boron \ : \ 8.5 * 10^{-8}$

$\sf Silver \ : \ 1.6 * 10^{-7}$

greatest to least :

• Potassium < Silver <  Boron < Argon

Answer 2

The order is

• Potassium>Silver>Boron>Argon

Shortcut trick :-

The nature of atomic radii in. periodic table

• Decrease in a period from left to right.
• Increase in a group from up to down