# What is the shorthand notation for a ground-state silicon (Si) atom?

Mar 29, 2018

[Ne] $3 {s}^{2} 3 {p}^{2}$

#### Explanation:

Silicon (ground state) has 14 electrons. Using this information and the electron configuration table:

We know that Silicon's full electron configuration is $1 {s}^{2} 2 {s}^{2} 2 {p}^{6} 3 {s}^{2} 3 {p}^{2}$

To write the short-hand notation we simply look for the noble gas that can fit silicon, in this case it would be neon with 10 electrons.

So we can rewrite $1 {s}^{2} 2 {s}^{2} 2 {p}^{6} 3 {s}^{2} 3 {p}^{2}$ as:
[Ne] $3 {s}^{2} 3 {p}^{2}$