Radon is highly reactive and forms toxic compounds.

Radon is a potent greenhouse gas contributing to climate change.

Radon is radioactive and can decay into harmful alpha particles.

Radon displaces oxygen in the atmosphere, leading to asphyxiation.

It has square planar structure

There are four $p\pi - d\pi$bonds

There are four $s{p^3} - p,\,\,\sigma$ bonds

$Xe{O_4}$ molecule is tetrahedral

It has a completely filled 1s subshell

It has a $2s^22p^6$ electronic configuration

It is a small atom

It has a completely filled d subshell

Helium

Neon

Argon

Xenon

$Octahedral,s{p^3}{d^2}$

$Planar{\rm{ }}triangle,s{p^3}{d^3}$

$Linear,s{p^3}d$

$Square{\rm{ }}planar,s{p^3}d$

XeF3−

XeF4

XeF5−

XeF6

Helium

Neon

Argon

Krypton

Stable completely filled electronic configuration

High effective nuclear charge

Small atomic size

Presence of d-electrons in the valence shell

XeF3-

XeF4

XeF5-

XeF6

$XeO{F_4}$

$Xe{O_4}$

$Xe{O_3}$

$Xe{O_2}{F_2}$

square planar, $s{p^3}{d^2}$

Octahydral, $s{p^3}{d^2}$

trigonal bipyramidal, $s{p^3}d$

planar triangle, $s{p^3}{d^3}$