Here's the electron configuration for a neutral atom of beryllium:

1s² 2s²

Here's how to understand it:

* Beryllium (Be) is an element with atomic number 4, meaning it has 4 protons and 4 electrons in its neutral state.

* 1s² indicates that the first energy level (n=1) has two electrons in the s subshell.

* 2s² indicates that the second energy level (n=2) has two electrons in the s subshell.

Let me know if you'd like to know more about electron configurations!