Valence Electrons in Tin (Sn)

Calculate the number of valence electrons in Tin 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 Tin

Determine the number of valence electrons in Tin (Sn, Element 50)

Step 1: Look up the electronic configuration for Tin

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

[Kr] 4d10 5s2 5p2

Calculate Electronic Configuration for Tin

Step 2: Identify the outermost electrons using the electronic configuration

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

4d10 5s2 5p2

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 = 5) are valence electrons.


Tin (Sn) has 4 (2 + 2) valence electrons.

Lewis Dot for Sn