Silicon Valence Electrons
Why silicon has 4
Silicon has 14 electrons, arranged as 1s2 2s2 2p6 3s2 3p2. The highest shell is n = 3, holding 3s2 3p2, so 2 + 2 = 4.
Silicon is in group 14; for groups 13–18 subtract 10 from the group number.
What that means for bonding
Four is halfway to an octet, so silicon usually shares electrons rather than gaining or losing them, forming four covalent bonds.
Electrons per shell: 2, 8, 4. See the silicon electron configuration and orbital diagram or the full silicon data sheet.
Same group, same count
Silicon valence electrons FAQ
How many valence electrons does silicon have?
Silicon has 4 valence electrons. Its electron configuration is 1s² 2s² 2p⁶ 3s² 3p², and the outermost shell (n = 3) holds 3s² + 3p².
How do you find the valence electrons of silicon?
Silicon is in group 14; for groups 13–18 subtract 10 from the group number.
How many bonds does silicon form?
Four is halfway to an octet, so silicon usually shares electrons rather than gaining or losing them, forming four covalent bonds.
What is the Lewis dot structure of silicon?
The symbol Si with 4 dots around it, one per valence electron, placed singly on each side before any side is paired.
How many core electrons does silicon have?
10: 14 electrons in total minus the 4 valence electrons.