Radon valence electrons

The information on this page is ✔ fact-checked.

Radon valence electrons
Radon valence electrons | Image: Learnool

Radon has 8 valence electrons.


We can write the valence electrons of radon using two different methods:

#1 Using periodic table
#2 Using electron configuration

Let’s break down each method in detail.

Using periodic table

Periodic table | Image: Learnool

Get the periodic table having the chemical elements marked on it as mentioned above.

Now mark the location of radon on the periodic table.

Radon location marked on periodic table | Image: Learnool

Next, mark the group number of radon on the periodic table.

Radon group number marked on periodic table | Image: Learnool

The valence electrons of each main-group element can be determined by the column in which it is located.

(i.e., all group 1 elements have 1 valence electron, all group 2 elements have 2 valence electrons, skip the transition metals… then, all group 13 elements have 3 valence electrons, all group 14 elements have 4 valence electrons, and so on up to group 18 elements)

Since radon is in group 18, it has 8 valence electrons.

Using electron configuration

  • First, write electron configuration of radon

The electron configuration of radon is [Xe] 6s2 4f14 5d10 6p6.

  • Second, find highest energy level in electron configuration
Green colored number represent highest energy level | Image: Learnool

In the above electron configuration, the highest energy level (6) is marked with green color.

  • Finally, count electrons of that energy level
Number circled with green color represent electrons | Image: Learnool

The 6th energy level contains 6s and 6p subshells. There are 2 electrons in the 6s subshell and 6 electrons in the 6p subshell. So radon has a total of 2 + 6 = 8 valence electrons.

Next: Hydrogen valence electrons


More topics

External links


Learnool.com was founded by Deep Rana, who is a mechanical engineer by profession and a blogger by passion. He has a good conceptual knowledge on different educational topics and he provides the same on this website. He loves to learn something new everyday and believes that the best utilization of free time is developing a new skill.

Leave a Comment