# How many valence electrons does N have?

Nitrogen atomic number (see Periodic Table, for example: https://iupac.org/what-we-do/periodic-table-of-elements/) is $Z = 7$. Then, the electronic structure of nitrogen is: $1 {s}^{2} 2 {s}^{2} 2 {p}^{3}$. Valence electrons are the electrons an atom have in the last level. In the nitrogen, last level is level 2, then there are 5 electrons of valence.