Valence Electrons in Oxygen (O)

Calculate the number of valence electrons in Oxygen 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 Oxygen

Determine the number of valence electrons in Oxygen (O, Element 8)

Step 1: Look up the electronic configuration for Oxygen

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

[He] 2s2 2p4

Calculate Electronic Configuration for Oxygen

Step 2: Identify the outermost electrons using the electronic configuration

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

2s2 2p4

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 = 2) are valence electrons.


Oxygen (O) has 6 (2 + 4) valence electrons.

Lewis Dot for O