Answer:
A beryllium atom, with two valence electrons, would have the electron dot diagram below.
...
Electron Dot Diagrams.
lithium. 1 s 2 2 s 1 1. valence electron
nitrogen 1 s 2 2 s 2 2 p 3 5. valence electrons
neon. 1 s 2 2 s 2 2 p 6 8 valence electrons
