Silicon valence electrons

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Silicon valence electrons
Silicon valence electrons | Image: Learnool

Silicon has 4 valence electrons.


We can write the valence electrons of silicon using two different methods:

#1 Using periodic table
#2 Using electron configuration

Let’s break down each method in detail.

Using periodic table

Periodic table | Image: Learnool

Get the periodic table having the chemical elements marked on it as mentioned above.

Now mark the location of silicon on the periodic table.

Silicon location marked on periodic table | Image: Learnool

Next, mark the group number of silicon on the periodic table.

Silicon group number marked on periodic table | Image: Learnool

The valence electrons of each main-group element can be determined by the column in which it is located.

(i.e., all group 1 elements have 1 valence electron, all group 2 elements have 2 valence electrons, skip the transition metals… then, all group 13 elements have 3 valence electrons, all group 14 elements have 4 valence electrons, and so on up to group 18 elements)

Since silicon is in group 14, it has 4 valence electrons.

Using electron configuration

  • First, write electron configuration of silicon

The electron configuration of silicon is [Ne] 3s2 3p2.

  • Second, find highest energy level in electron configuration
Green colored number represent highest energy level | Image: Learnool

In the above electron configuration, the highest energy level (3) is marked with green color.

  • Finally, count electrons of that energy level
Number circled with green color represent electrons | Image: Learnool

The 3rd energy level contains 3s and 3p subshells. There are 2 electrons in the 3s subshell and 2 electrons in the 3p subshell. So silicon has a total of 2 + 2 = 4 valence electrons.

Next: Phosphorus valence electrons


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Deep was founded by Deep Rana, who is a mechanical engineer by profession and a blogger by passion. He has a good conceptual knowledge on different educational topics and he provides the same on this website. He loves to learn something new everyday and believes that the best utilization of free time is developing a new skill.

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