Calculate the number of valence electrons in Silicon using its electron configuration step by step.
Determine the number of valence electrons in Silicon (Si, Element 14)
The abbreviated (condensed) ground electronic configuration for Silicon is:
[Ne] 3s2 3p2
Electrons in atomic orbitals outside the [Ne] core are the outermost electrons:
Extract the principle quantum number, n, and number of electrons from the electron configuration:
|Electron Configuration||n||Orbital||Number of Electrons|
The outermost electrons with the largest principal quantum number (in this case, n = 3) are valence electrons.
Silicon (Si) has 4 (2 + 2) valence electrons.