# What is the electron configuration of a nitrogen atom?

Jul 3, 2017

$1 {s}^{2}$ $2 {s}^{2}$ $2 {p}^{3}$

#### Explanation:

We need to find which period the element is in, and then which group it is in.

The $1 {s}^{2}$ is from the first period with Hydrogen and Helium.

The $2 {s}^{2}$ is from the second period Lithium and Beryllium.

Now we move onto the p-block in period 2. This means that our element will start with $2 p$

Since nitrogen is the third element (behind boron and carbon), we have the exponent 3 after the 2p.

The configuration is $1 {s}^{2}$ $2 {s}^{2}$ $2 {p}^{3}$

Hopefully this helped!