# How many valence electrons are in atom of radon?

May 16, 2014

Radon is a Noble Gas found in the 6th energy level (row) of the periodic table. Noble Gases, re in the 18th column, Group VIIIA.
This means Radon will end in a electron configuration of $6 {p}^{6}$.

The Noble Gas (core) notation for Radon is

$\left[X e\right] 6 {s}^{2} 4 {f}^{14} 5 {d}^{10} 6 {p}^{6}$

The valence level, (highest energy level s and p orbitals) is $6 {s}^{2} 6 {p}^{6}$

Radon has eight valence electrons. Like all Noble Gases, Radon is considered stable with a complete octet of electrons, filling the s and p orbitals.

I hope this was helpful.
SMARTERTEACHER