Valence Electrons in Radon (Rn)

Calculate the number of valence electrons in Radon using its electron configuration step by step.

Enter the atomic number or symbol of any element, and this calculator will calculate its valence electrons with steps.

Valence Electrons in Radon

Determine the number of valence electrons in Radon (Rn, Element 86)

Step 1: Look up the electronic configuration for Radon

The abbreviated (condensed) ground electronic configuration for Radon is:

[Xe] 4f14 5d10 6s2 6p6

Calculate Electronic Configuration for Radon

Step 2: Identify the outermost electrons using the electronic configuration

Electrons in atomic orbitals outside the [Xe] core are the outermost electrons:

4f14 5d10 6s2 6p6

Step 3: Use the principle quantum number to identify the valence electrons

Extract the principle quantum number, n, and number of electrons from the electron configuration:

Electron ConfigurationnOrbitalNumber of Electrons

The outermost electrons with the largest principal quantum number (in this case, n = 6) are valence electrons.


Radon (Rn) has 8 (2 + 6) valence electrons.

Lewis Dot for Rn