Valence Electrons in Einsteinium (Es)

Calculate the number of valence electrons in Einsteinium 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 Einsteinium

Determine the number of valence electrons in Einsteinium (Es, Element 99)

Step 1: Look up the electronic configuration for Einsteinium

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

[Rn] 5f11 7s2

Calculate Electronic Configuration for Einsteinium

Step 2: Identify the outermost electrons using the electronic configuration

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

5f11 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.


Einsteinium (Es) has 2 valence electron(s).

Lewis Dot for Es