Valence Electrons in Roentgenium (Rg)

Calculate the number of valence electrons in Roentgenium 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 Roentgenium

Determine the number of valence electrons in Roentgenium (Rg, Element 111)

Step 1: Look up the electronic configuration for Roentgenium

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

[Rn] 5f14 6d9 7s2

Calculate Electronic Configuration for Roentgenium

Step 2: Identify the outermost electrons using the electronic configuration

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

5f14 6d9 7s2

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 = 7) are valence electrons.


Roentgenium (Rg) has 2 valence electron(s).

Lewis Dot for Rg