Question

how many valence electrons does nitrogen have? * n 1 2 3 4 5 6 7 8

Explanation:

Step1: Recall nitrogen's electron - configuration

Nitrogen has an atomic number of 7. Its electron - configuration is 1s²2s²2p³.

Step2: Identify valence electrons

Valence electrons are in the outermost shell. For nitrogen, the outermost shell is the second shell (n = 2), and it has 2s²2p³ electrons in this shell. The sum of electrons in the 2s and 2p sub - shells is 2 + 3=5.

Answer:

E. 5