Question

exit ticket: lewis dot diagrams practice
give the correct number of valence electrons for the element nitrogen, n, atomic #7

Explanation:

Step1: Recall electron - shell configuration rule

The first shell can hold 2 electrons, and the second shell can hold up to 8 electrons. Nitrogen has 7 electrons.

Step2: Distribute electrons to shells

The first shell gets 2 electrons, and the remaining 7 - 2=5 electrons go to the second shell. Valence electrons are the electrons in the outermost shell.

Answer:

5