# What is the electron configuration for silicon (Si)?

May 25, 2018

Well, silicon has $14$ electrons.

#### Explanation:

We first start by writing the closest noble gas to silicon which has less electrons that it, so that noble gas is neon, which has $10$ electrons.

The configuration becomes:

$\left[N e\right]$

Still, there are $4$ electrons left over. The next shell that will come up is the $3 s$ shell, which can hold $2$ electrons. Filling it out, we get:

$\left[N e\right] 3 {s}^{2}$

Finally comes the $3 p$ shell, which can hold $6$ electrons. But since here there are only $2$ extra electrons left over, it'll hold $2$ of them. So, the final configuration is:

$\left[N e\right] 3 {s}^{2} \setminus 3 {p}^{2}$